Finding the Fourth Proportional to 28,342.17, 42,495.03 and 13,550.76

Step by Step Solution

1. Step 1: Write the proportion equation
   28,342.17 : 42,495.03 = 13,550.76 : x
2. Step 2: Convert to fraction form
   28,342.17/42,495.03 = 13,550.76/x
3. Step 3: Cross multiply
   28,342.17x = 42,495.03 × 13,550.76
4. Step 4: Simplify right side
   28,342.17x = 575,839,952.72
5. Step 5: Solve for x
   x = 575,839,952.72/28,342.17
6. Step 6: Final answer
   x = 20,317.43