Finding the Fourth Proportional to 12,848.72, 17,731.26 and 7,259.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,848.72 : 17,731.26 = 7,259.72 : x
2. Step 2: Convert to fraction form
   12,848.72/17,731.26 = 7,259.72/x
3. Step 3: Cross multiply
   12,848.72x = 17,731.26 × 7,259.72
4. Step 4: Simplify right side
   12,848.72x = 128,723,982.85
5. Step 5: Solve for x
   x = 128,723,982.85/12,848.72
6. Step 6: Final answer
   x = 10,018.43