Finding the Fourth Proportional to 11,643.58, 17,451.42 and 5,395.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,643.58 : 17,451.42 = 5,395.12 : x
2. Step 2: Convert to fraction form
   11,643.58/17,451.42 = 5,395.12/x
3. Step 3: Cross multiply
   11,643.58x = 17,451.42 × 5,395.12
4. Step 4: Simplify right side
   11,643.58x = 94,152,505.07
5. Step 5: Solve for x
   x = 94,152,505.07/11,643.58
6. Step 6: Final answer
   x = 8,086.22