Finding the Fourth Proportional to 9,680.61, 14,499.18 and 8,414.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,680.61 : 14,499.18 = 8,414.94 : x
2. Step 2: Convert to fraction form
   9,680.61/14,499.18 = 8,414.94/x
3. Step 3: Cross multiply
   9,680.61x = 14,499.18 × 8,414.94
4. Step 4: Simplify right side
   9,680.61x = 122,009,729.75
5. Step 5: Solve for x
   x = 122,009,729.75/9,680.61
6. Step 6: Final answer
   x = 12,603.52