Finding the Fourth Proportional to 8,971.68, 12,372.54 and 5,613.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,971.68 : 12,372.54 = 5,613.42 : x
2. Step 2: Convert to fraction form
   8,971.68/12,372.54 = 5,613.42/x
3. Step 3: Cross multiply
   8,971.68x = 12,372.54 × 5,613.42
4. Step 4: Simplify right side
   8,971.68x = 69,452,263.49
5. Step 5: Solve for x
   x = 69,452,263.49/8,971.68
6. Step 6: Final answer
   x = 7,741.28