Finding the Fourth Proportional to 12,440.17, 17,171.04 and 7,407.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,440.17 : 17,171.04 = 7,407.91 : x
2. Step 2: Convert to fraction form
   12,440.17/17,171.04 = 7,407.91/x
3. Step 3: Cross multiply
   12,440.17x = 17,171.04 × 7,407.91
4. Step 4: Simplify right side
   12,440.17x = 127,201,518.93
5. Step 5: Solve for x
   x = 127,201,518.93/12,440.17
6. Step 6: Final answer
   x = 10,225.06