Finding the Fourth Proportional to 28,063.99, 42,081.90 and 9,337.42

Step by Step Solution

1. Step 1: Write the proportion equation
   28,063.99 : 42,081.90 = 9,337.42 : x
2. Step 2: Convert to fraction form
   28,063.99/42,081.90 = 9,337.42/x
3. Step 3: Cross multiply
   28,063.99x = 42,081.90 × 9,337.42
4. Step 4: Simplify right side
   28,063.99x = 392,936,374.70
5. Step 5: Solve for x
   x = 392,936,374.70/28,063.99
6. Step 6: Final answer
   x = 14,001.44