Finding the Fourth Proportional to 10,018.60, 13,785.81 and 9,714.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,018.60 : 13,785.81 = 9,714.24 : x
2. Step 2: Convert to fraction form
   10,018.60/13,785.81 = 9,714.24/x
3. Step 3: Cross multiply
   10,018.60x = 13,785.81 × 9,714.24
4. Step 4: Simplify right side
   10,018.60x = 133,918,666.93
5. Step 5: Solve for x
   x = 133,918,666.93/10,018.60
6. Step 6: Final answer
   x = 13,367.00