Finding the Fourth Proportional to 9,123.18, 12,590.37 and 5,144.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.18 : 12,590.37 = 5,144.22 : x
2. Step 2: Convert to fraction form
   9,123.18/12,590.37 = 5,144.22/x
3. Step 3: Cross multiply
   9,123.18x = 12,590.37 × 5,144.22
4. Step 4: Simplify right side
   9,123.18x = 64,767,633.16
5. Step 5: Solve for x
   x = 64,767,633.16/9,123.18
6. Step 6: Final answer
   x = 7,099.24