Finding the Fourth Proportional to 9,026.96, 12,457.80 and 5,490.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,026.96 : 12,457.80 = 5,490.32 : x
2. Step 2: Convert to fraction form
   9,026.96/12,457.80 = 5,490.32/x
3. Step 3: Cross multiply
   9,026.96x = 12,457.80 × 5,490.32
4. Step 4: Simplify right side
   9,026.96x = 68,397,308.50
5. Step 5: Solve for x
   x = 68,397,308.50/9,026.96
6. Step 6: Final answer
   x = 7,577.00