Finding the Fourth Proportional to 9,165.16, 12,648.15 and 4,973.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,165.16 : 12,648.15 = 4,973.40 : x
2. Step 2: Convert to fraction form
   9,165.16/12,648.15 = 4,973.40/x
3. Step 3: Cross multiply
   9,165.16x = 12,648.15 × 4,973.40
4. Step 4: Simplify right side
   9,165.16x = 62,904,309.21
5. Step 5: Solve for x
   x = 62,904,309.21/9,165.16
6. Step 6: Final answer
   x = 6,863.42