Finding the Fourth Proportional to 12,640.91, 17,444.43 and 7,336.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,640.91 : 17,444.43 = 7,336.76 : x
2. Step 2: Convert to fraction form
   12,640.91/17,444.43 = 7,336.76/x
3. Step 3: Cross multiply
   12,640.91x = 17,444.43 × 7,336.76
4. Step 4: Simplify right side
   12,640.91x = 127,985,509.02
5. Step 5: Solve for x
   x = 127,985,509.02/12,640.91
6. Step 6: Final answer
   x = 10,124.71