Finding the Fourth Proportional to 9,064.64, 12,510.04 and 5,287.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,064.64 : 12,510.04 = 5,287.50 : x
2. Step 2: Convert to fraction form
   9,064.64/12,510.04 = 5,287.50/x
3. Step 3: Cross multiply
   9,064.64x = 12,510.04 × 5,287.50
4. Step 4: Simplify right side
   9,064.64x = 66,146,836.50
5. Step 5: Solve for x
   x = 66,146,836.50/9,064.64
6. Step 6: Final answer
   x = 7,297.24