Finding the Fourth Proportional to 31,152.12, 42,988.10 and 17,002.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,152.12 : 42,988.10 = 17,002.12 : x
2. Step 2: Convert to fraction form
   31,152.12/42,988.10 = 17,002.12/x
3. Step 3: Cross multiply
   31,152.12x = 42,988.10 × 17,002.12
4. Step 4: Simplify right side
   31,152.12x = 730,888,834.77
5. Step 5: Solve for x
   x = 730,888,834.77/31,152.12
6. Step 6: Final answer
   x = 23,461.93