Finding the Fourth Proportional to 12,116.31, 18,179.61 and 4,725.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,116.31 : 18,179.61 = 4,725.96 : x
2. Step 2: Convert to fraction form
   12,116.31/18,179.61 = 4,725.96/x
3. Step 3: Cross multiply
   12,116.31x = 18,179.61 × 4,725.96
4. Step 4: Simplify right side
   12,116.31x = 85,916,109.68
5. Step 5: Solve for x
   x = 85,916,109.68/12,116.31
6. Step 6: Final answer
   x = 7,090.95