Finding the Fourth Proportional to 12,053.10, 18,091.31 and 5,817.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,053.10 : 18,091.31 = 5,817.50 : x
2. Step 2: Convert to fraction form
   12,053.10/18,091.31 = 5,817.50/x
3. Step 3: Cross multiply
   12,053.10x = 18,091.31 × 5,817.50
4. Step 4: Simplify right side
   12,053.10x = 105,246,299.16
5. Step 5: Solve for x
   x = 105,246,299.16/12,053.10
6. Step 6: Final answer
   x = 8,731.89