Finding the Fourth Proportional to 10,721.02, 16,081.89 and 9,503.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,721.02 : 16,081.89 = 9,503.59 : x
2. Step 2: Convert to fraction form
   10,721.02/16,081.89 = 9,503.59/x
3. Step 3: Cross multiply
   10,721.02x = 16,081.89 × 9,503.59
4. Step 4: Simplify right side
   10,721.02x = 152,835,688.99
5. Step 5: Solve for x
   x = 152,835,688.99/10,721.02
6. Step 6: Final answer
   x = 14,255.70