Finding the Fourth Proportional to 11,431.19, 17,150.27 and 5,431.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,431.19 : 17,150.27 = 5,431.82 : x
2. Step 2: Convert to fraction form
   11,431.19/17,150.27 = 5,431.82/x
3. Step 3: Cross multiply
   11,431.19x = 17,150.27 × 5,431.82
4. Step 4: Simplify right side
   11,431.19x = 93,157,066.68
5. Step 5: Solve for x
   x = 93,157,066.68/11,431.19
6. Step 6: Final answer
   x = 8,149.37