Finding the Fourth Proportional to 10,123.72, 13,979.32 and 6,353.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,123.72 : 13,979.32 = 6,353.17 : x
2. Step 2: Convert to fraction form
   10,123.72/13,979.32 = 6,353.17/x
3. Step 3: Cross multiply
   10,123.72x = 13,979.32 × 6,353.17
4. Step 4: Simplify right side
   10,123.72x = 88,812,945.61
5. Step 5: Solve for x
   x = 88,812,945.61/10,123.72
6. Step 6: Final answer
   x = 8,772.76