Finding the Fourth Proportional to 9,414.67, 12,990.77 and 5,435.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,414.67 : 12,990.77 = 5,435.04 : x
2. Step 2: Convert to fraction form
   9,414.67/12,990.77 = 5,435.04/x
3. Step 3: Cross multiply
   9,414.67x = 12,990.77 × 5,435.04
4. Step 4: Simplify right side
   9,414.67x = 70,605,354.58
5. Step 5: Solve for x
   x = 70,605,354.58/9,414.67
6. Step 6: Final answer
   x = 7,499.50