Finding the Fourth Proportional to 17,900.10, 24,702.17 and 9,942.12

Step by Step Solution

1. Step 1: Write the proportion equation
   17,900.10 : 24,702.17 = 9,942.12 : x
2. Step 2: Convert to fraction form
   17,900.10/24,702.17 = 9,942.12/x
3. Step 3: Cross multiply
   17,900.10x = 24,702.17 × 9,942.12
4. Step 4: Simplify right side
   17,900.10x = 245,591,888.69
5. Step 5: Solve for x
   x = 245,591,888.69/17,900.10
6. Step 6: Final answer
   x = 13,720.14