Finding the Fourth Proportional to 9,414.98, 12,992.15 and 5,435.85

Step by Step Solution

1. Step 1: Write the proportion equation
   9,414.98 : 12,992.15 = 5,435.85 : x
2. Step 2: Convert to fraction form
   9,414.98/12,992.15 = 5,435.85/x
3. Step 3: Cross multiply
   9,414.98x = 12,992.15 × 5,435.85
4. Step 4: Simplify right side
   9,414.98x = 70,623,351.40
5. Step 5: Solve for x
   x = 70,623,351.40/9,414.98
6. Step 6: Final answer
   x = 7,501.17