Finding the Fourth Proportional to 9,056.43, 12,498.69 and 5,280.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,056.43 : 12,498.69 = 5,280.81 : x
2. Step 2: Convert to fraction form
   9,056.43/12,498.69 = 5,280.81/x
3. Step 3: Cross multiply
   9,056.43x = 12,498.69 × 5,280.81
4. Step 4: Simplify right side
   9,056.43x = 66,003,207.14
5. Step 5: Solve for x
   x = 66,003,207.14/9,056.43
6. Step 6: Final answer
   x = 7,287.99