Finding the Fourth Proportional to 31,185.90, 43,036.50 and 17,038.74

Step by Step Solution

1. Step 1: Write the proportion equation
   31,185.90 : 43,036.50 = 17,038.74 : x
2. Step 2: Convert to fraction form
   31,185.90/43,036.50 = 17,038.74/x
3. Step 3: Cross multiply
   31,185.90x = 43,036.50 × 17,038.74
4. Step 4: Simplify right side
   31,185.90x = 733,287,734.01
5. Step 5: Solve for x
   x = 733,287,734.01/31,185.90
6. Step 6: Final answer
   x = 23,513.44