Finding the Fourth Proportional to 7,486.79, 10,331.71 and 4,129.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,486.79 : 10,331.71 = 4,129.61 : x
2. Step 2: Convert to fraction form
   7,486.79/10,331.71 = 4,129.61/x
3. Step 3: Cross multiply
   7,486.79x = 10,331.71 × 4,129.61
4. Step 4: Simplify right side
   7,486.79x = 42,665,870.95
5. Step 5: Solve for x
   x = 42,665,870.95/7,486.79
6. Step 6: Final answer
   x = 5,698.82