Finding the Fourth Proportional to 12,131.39, 16,741.58 and 6,826.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,131.39 : 16,741.58 = 6,826.21 : x
2. Step 2: Convert to fraction form
   12,131.39/16,741.58 = 6,826.21/x
3. Step 3: Cross multiply
   12,131.39x = 16,741.58 × 6,826.21
4. Step 4: Simplify right side
   12,131.39x = 114,281,464.83
5. Step 5: Solve for x
   x = 114,281,464.83/12,131.39
6. Step 6: Final answer
   x = 9,420.31