Finding the Fourth Proportional to 10,254.18, 14,152.57 and 9,786.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,254.18 : 14,152.57 = 9,786.71 : x
2. Step 2: Convert to fraction form
   10,254.18/14,152.57 = 9,786.71/x
3. Step 3: Cross multiply
   10,254.18x = 14,152.57 × 9,786.71
4. Step 4: Simplify right side
   10,254.18x = 138,507,098.34
5. Step 5: Solve for x
   x = 138,507,098.34/10,254.18
6. Step 6: Final answer
   x = 13,507.38