Finding the Fourth Proportional to 28,462.56, 42,707.22 and 17,930.16

Step by Step Solution

1. Step 1: Write the proportion equation
   28,462.56 : 42,707.22 = 17,930.16 : x
2. Step 2: Convert to fraction form
   28,462.56/42,707.22 = 17,930.16/x
3. Step 3: Cross multiply
   28,462.56x = 42,707.22 × 17,930.16
4. Step 4: Simplify right side
   28,462.56x = 765,747,287.76
5. Step 5: Solve for x
   x = 765,747,287.76/28,462.56
6. Step 6: Final answer
   x = 26,903.67