Finding the Fourth Proportional to 28,151.91, 42,240.12 and 17,646

Step by Step Solution

1. Step 1: Write the proportion equation
   28,151.91 : 42,240.12 = 17,646 : x
2. Step 2: Convert to fraction form
   28,151.91/42,240.12 = 17,646/x
3. Step 3: Cross multiply
   28,151.91x = 42,240.12 × 17,646
4. Step 4: Simplify right side
   28,151.91x = 745,369,157.52
5. Step 5: Solve for x
   x = 745,369,157.52/28,151.91
6. Step 6: Final answer
   x = 26,476.68