Finding the Fourth Proportional to 11,145.12, 16,706.69 and 5,305.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,145.12 : 16,706.69 = 5,305.83 : x
2. Step 2: Convert to fraction form
   11,145.12/16,706.69 = 5,305.83/x
3. Step 3: Cross multiply
   11,145.12x = 16,706.69 × 5,305.83
4. Step 4: Simplify right side
   11,145.12x = 88,642,830.47
5. Step 5: Solve for x
   x = 88,642,830.47/11,145.12
6. Step 6: Final answer
   x = 7,953.51