Finding the Fourth Proportional to 38,415,720.84, 53,014,105.98 and 21,011,693.91

Step by Step Solution

1. Step 1: Write the proportion equation
   38,415,720.84 : 53,014,105.98 = 21,011,693.91 : x
2. Step 2: Convert to fraction form
   38,415,720.84/53,014,105.98 = 21,011,693.91/x
3. Step 3: Cross multiply
   38,415,720.84x = 53,014,105.98 × 21,011,693.91
4. Step 4: Simplify right side
   38,415,720.84x = 1,113,916,167,764,060.50
5. Step 5: Solve for x
   x = 1,113,916,167,764,060.50/38,415,720.84
6. Step 6: Final answer
   x = 28,996,362.52