Finding the Fourth Proportional to 8,123.15, 12,189.58 and 7,462.19

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.15 : 12,189.58 = 7,462.19 : x
2. Step 2: Convert to fraction form
   8,123.15/12,189.58 = 7,462.19/x
3. Step 3: Cross multiply
   8,123.15x = 12,189.58 × 7,462.19
4. Step 4: Simplify right side
   8,123.15x = 90,960,863.72
5. Step 5: Solve for x
   x = 90,960,863.72/8,123.15
6. Step 6: Final answer
   x = 11,197.74