Finding the Fourth Proportional to 12,868.24, 17,767.28 and 10,038.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,868.24 : 17,767.28 = 10,038.72 : x
2. Step 2: Convert to fraction form
   12,868.24/17,767.28 = 10,038.72/x
3. Step 3: Cross multiply
   12,868.24x = 17,767.28 × 10,038.72
4. Step 4: Simplify right side
   12,868.24x = 178,360,749.08
5. Step 5: Solve for x
   x = 178,360,749.08/12,868.24
6. Step 6: Final answer
   x = 13,860.54