Finding the Fourth Proportional to 9,123.07, 12,589.63 and 5,144.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.07 : 12,589.63 = 5,144.32 : x
2. Step 2: Convert to fraction form
   9,123.07/12,589.63 = 5,144.32/x
3. Step 3: Cross multiply
   9,123.07x = 12,589.63 × 5,144.32
4. Step 4: Simplify right side
   9,123.07x = 64,765,117.21
5. Step 5: Solve for x
   x = 64,765,117.21/9,123.07
6. Step 6: Final answer
   x = 7,099.05