Finding the Fourth Proportional to 31,020.13, 42,796.18 and 18,265.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,020.13 : 42,796.18 = 18,265.52 : x
2. Step 2: Convert to fraction form
   31,020.13/42,796.18 = 18,265.52/x
3. Step 3: Cross multiply
   31,020.13x = 42,796.18 × 18,265.52
4. Step 4: Simplify right side
   31,020.13x = 781,694,222.07
5. Step 5: Solve for x
   x = 781,694,222.07/31,020.13
6. Step 6: Final answer
   x = 25,199.58