Finding the Fourth Proportional to 28,081.98, 38,749.83 and 15,505.98

Step by Step Solution

1. Step 1: Write the proportion equation
   28,081.98 : 38,749.83 = 15,505.98 : x
2. Step 2: Convert to fraction form
   28,081.98/38,749.83 = 15,505.98/x
3. Step 3: Cross multiply
   28,081.98x = 38,749.83 × 15,505.98
4. Step 4: Simplify right side
   28,081.98x = 600,854,088.98
5. Step 5: Solve for x
   x = 600,854,088.98/28,081.98
6. Step 6: Final answer
   x = 21,396.43