Finding the Fourth Proportional to 6,428,139.78, 8,871,088.76 and 3,527,634.45

Step by Step Solution

1. Step 1: Write the proportion equation
   6,428,139.78 : 8,871,088.76 = 3,527,634.45 : x
2. Step 2: Convert to fraction form
   6,428,139.78/8,871,088.76 = 3,527,634.45/x
3. Step 3: Cross multiply
   6,428,139.78x = 8,871,088.76 × 3,527,634.45
4. Step 4: Simplify right side
   6,428,139.78x = 31,293,958,301,145.61
5. Step 5: Solve for x
   x = 31,293,958,301,145.61/6,428,139.78
6. Step 6: Final answer
   x = 4,868,275.95