Finding the Fourth Proportional to 9,266.20, 12,788.33 and 5,490.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,266.20 : 12,788.33 = 5,490.59 : x
2. Step 2: Convert to fraction form
   9,266.20/12,788.33 = 5,490.59/x
3. Step 3: Cross multiply
   9,266.20x = 12,788.33 × 5,490.59
4. Step 4: Simplify right side
   9,266.20x = 70,215,416.30
5. Step 5: Solve for x
   x = 70,215,416.30/9,266.20
6. Step 6: Final answer
   x = 7,577.59