Finding the Fourth Proportional to 8,432.42, 12,648.84 and 2,885.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,432.42 : 12,648.84 = 2,885.72 : x
2. Step 2: Convert to fraction form
   8,432.42/12,648.84 = 2,885.72/x
3. Step 3: Cross multiply
   8,432.42x = 12,648.84 × 2,885.72
4. Step 4: Simplify right side
   8,432.42x = 36,501,010.56
5. Step 5: Solve for x
   x = 36,501,010.56/8,432.42
6. Step 6: Final answer
   x = 4,328.65