Finding the Fourth Proportional to 9,016.86, 12,438.96 and 5,658

Step by Step Solution

1. Step 1: Write the proportion equation
   9,016.86 : 12,438.96 = 5,658 : x
2. Step 2: Convert to fraction form
   9,016.86/12,438.96 = 5,658/x
3. Step 3: Cross multiply
   9,016.86x = 12,438.96 × 5,658
4. Step 4: Simplify right side
   9,016.86x = 70,379,635.68
5. Step 5: Solve for x
   x = 70,379,635.68/9,016.86
6. Step 6: Final answer
   x = 7,805.34