Finding the Fourth Proportional to 23,218.45, 32,042.59 and 13,147.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,218.45 : 32,042.59 = 13,147.31 : x
2. Step 2: Convert to fraction form
   23,218.45/32,042.59 = 13,147.31/x
3. Step 3: Cross multiply
   23,218.45x = 32,042.59 × 13,147.31
4. Step 4: Simplify right side
   23,218.45x = 421,273,911.17
5. Step 5: Solve for x
   x = 421,273,911.17/23,218.45
6. Step 6: Final answer
   x = 18,143.93