Finding the Fourth Proportional to 10,156.44, 15,234.71 and 2,659.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,156.44 : 15,234.71 = 2,659.98 : x
2. Step 2: Convert to fraction form
   10,156.44/15,234.71 = 2,659.98/x
3. Step 3: Cross multiply
   10,156.44x = 15,234.71 × 2,659.98
4. Step 4: Simplify right side
   10,156.44x = 40,524,039.17
5. Step 5: Solve for x
   x = 40,524,039.17/10,156.44
6. Step 6: Final answer
   x = 3,989.99