Finding the Fourth Proportional to 9,980,212.59, 14,963,882.49 and 3,915,557.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,980,212.59 : 14,963,882.49 = 3,915,557.28 : x
2. Step 2: Convert to fraction form
   9,980,212.59/14,963,882.49 = 3,915,557.28/x
3. Step 3: Cross multiply
   9,980,212.59x = 14,963,882.49 × 3,915,557.28
4. Step 4: Simplify right side
   9,980,212.59x = 58,591,939,020,784.02
5. Step 5: Solve for x
   x = 58,591,939,020,784.02/9,980,212.59
6. Step 6: Final answer
   x = 5,870,810.72