Finding the Fourth Proportional to 9,159.24, 12,638.52 and 5,381.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,159.24 : 12,638.52 = 5,381.94 : x
2. Step 2: Convert to fraction form
   9,159.24/12,638.52 = 5,381.94/x
3. Step 3: Cross multiply
   9,159.24x = 12,638.52 × 5,381.94
4. Step 4: Simplify right side
   9,159.24x = 68,019,756.33
5. Step 5: Solve for x
   x = 68,019,756.33/9,159.24
6. Step 6: Final answer
   x = 7,426.35