Finding the Fourth Proportional to 17,719.74, 24,438.69 and 12,934.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,719.74 : 24,438.69 = 12,934.31 : x
2. Step 2: Convert to fraction form
   17,719.74/24,438.69 = 12,934.31/x
3. Step 3: Cross multiply
   17,719.74x = 24,438.69 × 12,934.31
4. Step 4: Simplify right side
   17,719.74x = 316,097,592.45
5. Step 5: Solve for x
   x = 316,097,592.45/17,719.74
6. Step 6: Final answer
   x = 17,838.73