Finding the Fourth Proportional to 17,875.56, 24,671.24 and 9,920.34

Step by Step Solution

1. Step 1: Write the proportion equation
   17,875.56 : 24,671.24 = 9,920.34 : x
2. Step 2: Convert to fraction form
   17,875.56/24,671.24 = 9,920.34/x
3. Step 3: Cross multiply
   17,875.56x = 24,671.24 × 9,920.34
4. Step 4: Simplify right side
   17,875.56x = 244,747,039.42
5. Step 5: Solve for x
   x = 244,747,039.42/17,875.56
6. Step 6: Final answer
   x = 13,691.71