Finding the Fourth Proportional to 8,702.52, 12,011.94 and 5,168.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,702.52 : 12,011.94 = 5,168.22 : x
2. Step 2: Convert to fraction form
   8,702.52/12,011.94 = 5,168.22/x
3. Step 3: Cross multiply
   8,702.52x = 12,011.94 × 5,168.22
4. Step 4: Simplify right side
   8,702.52x = 62,080,348.55
5. Step 5: Solve for x
   x = 62,080,348.55/8,702.52
6. Step 6: Final answer
   x = 7,133.61