Finding the Fourth Proportional to 2,820,428,753.37, 3,888,089,580.24 and 1,971,018,926.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820,428,753.37 : 3,888,089,580.24 = 1,971,018,926.70 : x
2. Step 2: Convert to fraction form
   2,820,428,753.37/3,888,089,580.24 = 1,971,018,926.70/x
3. Step 3: Cross multiply
   2,820,428,753.37x = 3,888,089,580.24 × 1,971,018,926.70
4. Step 4: Simplify right side
   2,820,428,753.37x = 7,663,498,151,358,098,432
5. Step 5: Solve for x
   x = 7,663,498,151,358,098,432/2,820,428,753.37
6. Step 6: Final answer
   x = 2,717,139,421.52