Finding the Fourth Proportional to 9,372.96, 12,934.32 and 5,181.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,372.96 : 12,934.32 = 5,181.12 : x
2. Step 2: Convert to fraction form
   9,372.96/12,934.32 = 5,181.12/x
3. Step 3: Cross multiply
   9,372.96x = 12,934.32 × 5,181.12
4. Step 4: Simplify right side
   9,372.96x = 67,014,264.04
5. Step 5: Solve for x
   x = 67,014,264.04/9,372.96
6. Step 6: Final answer
   x = 7,149.74