Finding the Fourth Proportional to 17,139.57, 23,652.71 and 9,973.74

Step by Step Solution

1. Step 1: Write the proportion equation
   17,139.57 : 23,652.71 = 9,973.74 : x
2. Step 2: Convert to fraction form
   17,139.57/23,652.71 = 9,973.74/x
3. Step 3: Cross multiply
   17,139.57x = 23,652.71 × 9,973.74
4. Step 4: Simplify right side
   17,139.57x = 235,906,004.77
5. Step 5: Solve for x
   x = 235,906,004.77/17,139.57
6. Step 6: Final answer
   x = 13,763.82