Finding the Fourth Proportional to 28,151.41, 42,239.37 and 17,645.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,151.41 : 42,239.37 = 17,645.50 : x
2. Step 2: Convert to fraction form
   28,151.41/42,239.37 = 17,645.50/x
3. Step 3: Cross multiply
   28,151.41x = 42,239.37 × 17,645.50
4. Step 4: Simplify right side
   28,151.41x = 745,334,803.34
5. Step 5: Solve for x
   x = 745,334,803.34/28,151.41
6. Step 6: Final answer
   x = 26,475.93