Finding the Fourth Proportional to 9,917.85, 14,839.71 and 9,807.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,917.85 : 14,839.71 = 9,807.15 : x
2. Step 2: Convert to fraction form
   9,917.85/14,839.71 = 9,807.15/x
3. Step 3: Cross multiply
   9,917.85x = 14,839.71 × 9,807.15
4. Step 4: Simplify right side
   9,917.85x = 145,535,261.93
5. Step 5: Solve for x
   x = 145,535,261.93/9,917.85
6. Step 6: Final answer
   x = 14,674.07