Finding the Fourth Proportional to 9,328.55, 12,870.86 and 6,492.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,328.55 : 12,870.86 = 6,492.74 : x
2. Step 2: Convert to fraction form
   9,328.55/12,870.86 = 6,492.74/x
3. Step 3: Cross multiply
   9,328.55x = 12,870.86 × 6,492.74
4. Step 4: Simplify right side
   9,328.55x = 83,567,147.27
5. Step 5: Solve for x
   x = 83,567,147.27/9,328.55
6. Step 6: Final answer
   x = 8,958.21