Finding the Fourth Proportional to 12,327.62, 17,017.74 and 7,857.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,327.62 : 17,017.74 = 7,857.50 : x
2. Step 2: Convert to fraction form
   12,327.62/17,017.74 = 7,857.50/x
3. Step 3: Cross multiply
   12,327.62x = 17,017.74 × 7,857.50
4. Step 4: Simplify right side
   12,327.62x = 133,716,892.05
5. Step 5: Solve for x
   x = 133,716,892.05/12,327.62
6. Step 6: Final answer
   x = 10,846.93