Finding the Fourth Proportional to 11,061.70, 16,544.55 and 9,900.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,061.70 : 16,544.55 = 9,900.10 : x
2. Step 2: Convert to fraction form
   11,061.70/16,544.55 = 9,900.10/x
3. Step 3: Cross multiply
   11,061.70x = 16,544.55 × 9,900.10
4. Step 4: Simplify right side
   11,061.70x = 163,792,699.46
5. Step 5: Solve for x
   x = 163,792,699.46/11,061.70
6. Step 6: Final answer
   x = 14,807.19