Finding the Fourth Proportional to 9,165.66, 12,648.61 and 4,973.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,165.66 : 12,648.61 = 4,973.91 : x
2. Step 2: Convert to fraction form
   9,165.66/12,648.61 = 4,973.91/x
3. Step 3: Cross multiply
   9,165.66x = 12,648.61 × 4,973.91
4. Step 4: Simplify right side
   9,165.66x = 62,912,978.57
5. Step 5: Solve for x
   x = 62,912,978.57/9,165.66
6. Step 6: Final answer
   x = 6,863.99