Finding the Fourth Proportional to 8,791.61, 12,132.50 and 5,433.66

Step by Step Solution

1. Step 1: Write the proportion equation
   8,791.61 : 12,132.50 = 5,433.66 : x
2. Step 2: Convert to fraction form
   8,791.61/12,132.50 = 5,433.66/x
3. Step 3: Cross multiply
   8,791.61x = 12,132.50 × 5,433.66
4. Step 4: Simplify right side
   8,791.61x = 65,923,852.78
5. Step 5: Solve for x
   x = 65,923,852.78/8,791.61
6. Step 6: Final answer
   x = 7,498.50