Finding the Fourth Proportional to 17,347.50, 23,939.55 and 12,892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,347.50 : 23,939.55 = 12,892.50 : x
2. Step 2: Convert to fraction form
   17,347.50/23,939.55 = 12,892.50/x
3. Step 3: Cross multiply
   17,347.50x = 23,939.55 × 12,892.50
4. Step 4: Simplify right side
   17,347.50x = 308,640,648.38
5. Step 5: Solve for x
   x = 308,640,648.38/17,347.50
6. Step 6: Final answer
   x = 17,791.65