Finding the Fourth Proportional to 12,406.57, 17,114.36 and 7,861.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,406.57 : 17,114.36 = 7,861.02 : x
2. Step 2: Convert to fraction form
   12,406.57/17,114.36 = 7,861.02/x
3. Step 3: Cross multiply
   12,406.57x = 17,114.36 × 7,861.02
4. Step 4: Simplify right side
   12,406.57x = 134,536,222.76
5. Step 5: Solve for x
   x = 134,536,222.76/12,406.57
6. Step 6: Final answer
   x = 10,843.95