Finding the Fourth Proportional to 9,877.72, 14,822.56 and 4,331.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,877.72 : 14,822.56 = 4,331.38 : x
2. Step 2: Convert to fraction form
   9,877.72/14,822.56 = 4,331.38/x
3. Step 3: Cross multiply
   9,877.72x = 14,822.56 × 4,331.38
4. Step 4: Simplify right side
   9,877.72x = 64,202,139.93
5. Step 5: Solve for x
   x = 64,202,139.93/9,877.72
6. Step 6: Final answer
   x = 6,499.69