Finding the Fourth Proportional to 9,372.91, 12,934.59 and 5,181.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,372.91 : 12,934.59 = 5,181.16 : x
2. Step 2: Convert to fraction form
   9,372.91/12,934.59 = 5,181.16/x
3. Step 3: Cross multiply
   9,372.91x = 12,934.59 × 5,181.16
4. Step 4: Simplify right side
   9,372.91x = 67,016,180.32
5. Step 5: Solve for x
   x = 67,016,180.32/9,372.91
6. Step 6: Final answer
   x = 7,149.99