Finding the Fourth Proportional to 12,892.12, 17,794.48 and 7,859.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,892.12 : 17,794.48 = 7,859.60 : x
2. Step 2: Convert to fraction form
   12,892.12/17,794.48 = 7,859.60/x
3. Step 3: Cross multiply
   12,892.12x = 17,794.48 × 7,859.60
4. Step 4: Simplify right side
   12,892.12x = 139,857,495.01
5. Step 5: Solve for x
   x = 139,857,495.01/12,892.12
6. Step 6: Final answer
   x = 10,848.29