Finding the Fourth Proportional to 12,715.68, 17,547.12 and 7,410.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,715.68 : 17,547.12 = 7,410.72 : x
2. Step 2: Convert to fraction form
   12,715.68/17,547.12 = 7,410.72/x
3. Step 3: Cross multiply
   12,715.68x = 17,547.12 × 7,410.72
4. Step 4: Simplify right side
   12,715.68x = 130,036,793.13
5. Step 5: Solve for x
   x = 130,036,793.13/12,715.68
6. Step 6: Final answer
   x = 10,226.49