Finding the Fourth Proportional to 11,185.10, 16,776.68 and 5,260.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,185.10 : 16,776.68 = 5,260.59 : x
2. Step 2: Convert to fraction form
   11,185.10/16,776.68 = 5,260.59/x
3. Step 3: Cross multiply
   11,185.10x = 16,776.68 × 5,260.59
4. Step 4: Simplify right side
   11,185.10x = 88,255,233.93
5. Step 5: Solve for x
   x = 88,255,233.93/11,185.10
6. Step 6: Final answer
   x = 7,890.43