Finding the Fourth Proportional to 11,003.52, 16,501.13 and 3,981.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,003.52 : 16,501.13 = 3,981.80 : x
2. Step 2: Convert to fraction form
   11,003.52/16,501.13 = 3,981.80/x
3. Step 3: Cross multiply
   11,003.52x = 16,501.13 × 3,981.80
4. Step 4: Simplify right side
   11,003.52x = 65,704,116.93
5. Step 5: Solve for x
   x = 65,704,116.93/11,003.52
6. Step 6: Final answer
   x = 5,971.19