Finding the Fourth Proportional to 10,877.31, 16,242.03 and 10,261.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,877.31 : 16,242.03 = 10,261.31 : x
2. Step 2: Convert to fraction form
   10,877.31/16,242.03 = 10,261.31/x
3. Step 3: Cross multiply
   10,877.31x = 16,242.03 × 10,261.31
4. Step 4: Simplify right side
   10,877.31x = 166,664,423.65
5. Step 5: Solve for x
   x = 166,664,423.65/10,877.31
6. Step 6: Final answer
   x = 15,322.21