Finding the Fourth Proportional to 9,975.18, 14,935.98 and 5,580.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,975.18 : 14,935.98 = 5,580.12 : x
2. Step 2: Convert to fraction form
   9,975.18/14,935.98 = 5,580.12/x
3. Step 3: Cross multiply
   9,975.18x = 14,935.98 × 5,580.12
4. Step 4: Simplify right side
   9,975.18x = 83,344,560.72
5. Step 5: Solve for x
   x = 83,344,560.72/9,975.18
6. Step 6: Final answer
   x = 8,355.19