Finding the Fourth Proportional to 10,961.04, 16,445.69 and 6,581.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,961.04 : 16,445.69 = 6,581.55 : x
2. Step 2: Convert to fraction form
   10,961.04/16,445.69 = 6,581.55/x
3. Step 3: Cross multiply
   10,961.04x = 16,445.69 × 6,581.55
4. Step 4: Simplify right side
   10,961.04x = 108,238,131.02
5. Step 5: Solve for x
   x = 108,238,131.02/10,961.04
6. Step 6: Final answer
   x = 9,874.80