Finding the Fourth Proportional to 15,273.83, 21,081.20 and 8,901.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,273.83 : 21,081.20 = 8,901.50 : x
2. Step 2: Convert to fraction form
   15,273.83/21,081.20 = 8,901.50/x
3. Step 3: Cross multiply
   15,273.83x = 21,081.20 × 8,901.50
4. Step 4: Simplify right side
   15,273.83x = 187,654,151.89
5. Step 5: Solve for x
   x = 187,654,151.89/15,273.83
6. Step 6: Final answer
   x = 12,285.99