Finding the Fourth Proportional to 28,104.76, 42,189.72 and 16,426.36

Step by Step Solution

1. Step 1: Write the proportion equation
   28,104.76 : 42,189.72 = 16,426.36 : x
2. Step 2: Convert to fraction form
   28,104.76/42,189.72 = 16,426.36/x
3. Step 3: Cross multiply
   28,104.76x = 42,189.72 × 16,426.36
4. Step 4: Simplify right side
   28,104.76x = 693,023,529.02
5. Step 5: Solve for x
   x = 693,023,529.02/28,104.76
6. Step 6: Final answer
   x = 24,658.58