Finding the Fourth Proportional to 31,876.88, 43,991.72 and 17,730

Step by Step Solution

1. Step 1: Write the proportion equation
   31,876.88 : 43,991.72 = 17,730 : x
2. Step 2: Convert to fraction form
   31,876.88/43,991.72 = 17,730/x
3. Step 3: Cross multiply
   31,876.88x = 43,991.72 × 17,730
4. Step 4: Simplify right side
   31,876.88x = 779,973,195.60
5. Step 5: Solve for x
   x = 779,973,195.60/31,876.88
6. Step 6: Final answer
   x = 24,468.30