Finding the Fourth Proportional to 28,003.11, 42,081.81 and 14,865.31

Step by Step Solution

1. Step 1: Write the proportion equation
   28,003.11 : 42,081.81 = 14,865.31 : x
2. Step 2: Convert to fraction form
   28,003.11/42,081.81 = 14,865.31/x
3. Step 3: Cross multiply
   28,003.11x = 42,081.81 × 14,865.31
4. Step 4: Simplify right side
   28,003.11x = 625,559,151.01
5. Step 5: Solve for x
   x = 625,559,151.01/28,003.11
6. Step 6: Final answer
   x = 22,338.92