Finding the Fourth Proportional to 9,064, 12,507.24 and 5,287.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,064 : 12,507.24 = 5,287.96 : x
2. Step 2: Convert to fraction form
   9,064/12,507.24 = 5,287.96/x
3. Step 3: Cross multiply
   9,064x = 12,507.24 × 5,287.96
4. Step 4: Simplify right side
   9,064x = 66,137,784.83
5. Step 5: Solve for x
   x = 66,137,784.83/9,064
6. Step 6: Final answer
   x = 7,296.75