Finding the Fourth Proportional to 12,435.73, 17,156.61 and 7,400.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,435.73 : 17,156.61 = 7,400.16 : x
2. Step 2: Convert to fraction form
   12,435.73/17,156.61 = 7,400.16/x
3. Step 3: Cross multiply
   12,435.73x = 17,156.61 × 7,400.16
4. Step 4: Simplify right side
   12,435.73x = 126,961,659.06
5. Step 5: Solve for x
   x = 126,961,659.06/12,435.73
6. Step 6: Final answer
   x = 10,209.43