Finding the Fourth Proportional to 12,354.10, 17,056.53 and 8,112.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,354.10 : 17,056.53 = 8,112.69 : x
2. Step 2: Convert to fraction form
   12,354.10/17,056.53 = 8,112.69/x
3. Step 3: Cross multiply
   12,354.10x = 17,056.53 × 8,112.69
4. Step 4: Simplify right side
   12,354.10x = 138,374,340.37
5. Step 5: Solve for x
   x = 138,374,340.37/12,354.10
6. Step 6: Final answer
   x = 11,200.68