Finding the Fourth Proportional to 8,271.42, 12,393.89 and 7,432.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,271.42 : 12,393.89 = 7,432.15 : x
2. Step 2: Convert to fraction form
   8,271.42/12,393.89 = 7,432.15/x
3. Step 3: Cross multiply
   8,271.42x = 12,393.89 × 7,432.15
4. Step 4: Simplify right side
   8,271.42x = 92,113,249.56
5. Step 5: Solve for x
   x = 92,113,249.56/8,271.42
6. Step 6: Final answer
   x = 11,136.33