Finding the Fourth Proportional to 31,428.06, 43,370.76 and 17,087.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,428.06 : 43,370.76 = 17,087.82 : x
2. Step 2: Convert to fraction form
   31,428.06/43,370.76 = 17,087.82/x
3. Step 3: Cross multiply
   31,428.06x = 43,370.76 × 17,087.82
4. Step 4: Simplify right side
   31,428.06x = 741,111,740.14
5. Step 5: Solve for x
   x = 741,111,740.14/31,428.06
6. Step 6: Final answer
   x = 23,581.21