Finding the Fourth Proportional to 9,259.16, 12,777.89 and 5,281.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,259.16 : 12,777.89 = 5,281.25 : x
2. Step 2: Convert to fraction form
   9,259.16/12,777.89 = 5,281.25/x
3. Step 3: Cross multiply
   9,259.16x = 12,777.89 × 5,281.25
4. Step 4: Simplify right side
   9,259.16x = 67,483,141.27
5. Step 5: Solve for x
   x = 67,483,141.27/9,259.16
6. Step 6: Final answer
   x = 7,288.26