Finding the Fourth Proportional to 8,971.46, 12,380.69 and 5,432.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,971.46 : 12,380.69 = 5,432.21 : x
2. Step 2: Convert to fraction form
   8,971.46/12,380.69 = 5,432.21/x
3. Step 3: Cross multiply
   8,971.46x = 12,380.69 × 5,432.21
4. Step 4: Simplify right side
   8,971.46x = 67,254,480.86
5. Step 5: Solve for x
   x = 67,254,480.86/8,971.46
6. Step 6: Final answer
   x = 7,496.49