Finding the Fourth Proportional to 9,123.09, 12,590.98 and 5,144.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.09 : 12,590.98 = 5,144.12 : x
2. Step 2: Convert to fraction form
   9,123.09/12,590.98 = 5,144.12/x
3. Step 3: Cross multiply
   9,123.09x = 12,590.98 × 5,144.12
4. Step 4: Simplify right side
   9,123.09x = 64,769,518.47
5. Step 5: Solve for x
   x = 64,769,518.47/9,123.09
6. Step 6: Final answer
   x = 7,099.52