Finding the Fourth Proportional to 31,417.98, 43,343.10 and 17,986.15

Step by Step Solution

1. Step 1: Write the proportion equation
   31,417.98 : 43,343.10 = 17,986.15 : x
2. Step 2: Convert to fraction form
   31,417.98/43,343.10 = 17,986.15/x
3. Step 3: Cross multiply
   31,417.98x = 43,343.10 × 17,986.15
4. Step 4: Simplify right side
   31,417.98x = 779,575,552.24
5. Step 5: Solve for x
   x = 779,575,552.24/31,417.98
6. Step 6: Final answer
   x = 24,813.04