Finding the Fourth Proportional to 12,200.67, 18,300.60 and 5,176.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200.67 : 18,300.60 = 5,176.17 : x
2. Step 2: Convert to fraction form
   12,200.67/18,300.60 = 5,176.17/x
3. Step 3: Cross multiply
   12,200.67x = 18,300.60 × 5,176.17
4. Step 4: Simplify right side
   12,200.67x = 94,727,016.70
5. Step 5: Solve for x
   x = 94,727,016.70/12,200.67
6. Step 6: Final answer
   x = 7,764.08