Finding the Fourth Proportional to 17,545.39, 24,209.83 and 9,991.86

Step by Step Solution

1. Step 1: Write the proportion equation
   17,545.39 : 24,209.83 = 9,991.86 : x
2. Step 2: Convert to fraction form
   17,545.39/24,209.83 = 9,991.86/x
3. Step 3: Cross multiply
   17,545.39x = 24,209.83 × 9,991.86
4. Step 4: Simplify right side
   17,545.39x = 241,901,231.98
5. Step 5: Solve for x
   x = 241,901,231.98/17,545.39
6. Step 6: Final answer
   x = 13,787.17