Finding the Fourth Proportional to 9,322.56, 12,864.96 and 5,130.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,322.56 : 12,864.96 = 5,130.72 : x
2. Step 2: Convert to fraction form
   9,322.56/12,864.96 = 5,130.72/x
3. Step 3: Cross multiply
   9,322.56x = 12,864.96 × 5,130.72
4. Step 4: Simplify right side
   9,322.56x = 66,006,507.57
5. Step 5: Solve for x
   x = 66,006,507.57/9,322.56
6. Step 6: Final answer
   x = 7,080.30