Finding the Fourth Proportional to 11,854.25, 17,779.91 and 7,412.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,854.25 : 17,779.91 = 7,412.31 : x
2. Step 2: Convert to fraction form
   11,854.25/17,779.91 = 7,412.31/x
3. Step 3: Cross multiply
   11,854.25x = 17,779.91 × 7,412.31
4. Step 4: Simplify right side
   11,854.25x = 131,790,167.63
5. Step 5: Solve for x
   x = 131,790,167.63/11,854.25
6. Step 6: Final answer
   x = 11,117.55