Finding the Fourth Proportional to 12,174.60, 18,250.72 and 5,150.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,174.60 : 18,250.72 = 5,150.79 : x
2. Step 2: Convert to fraction form
   12,174.60/18,250.72 = 5,150.79/x
3. Step 3: Cross multiply
   12,174.60x = 18,250.72 × 5,150.79
4. Step 4: Simplify right side
   12,174.60x = 94,005,613.19
5. Step 5: Solve for x
   x = 94,005,613.19/12,174.60
6. Step 6: Final answer
   x = 7,721.45