Finding the Fourth Proportional to 12,876.60, 17,768.25 and 7,841.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,876.60 : 17,768.25 = 7,841.04 : x
2. Step 2: Convert to fraction form
   12,876.60/17,768.25 = 7,841.04/x
3. Step 3: Cross multiply
   12,876.60x = 17,768.25 × 7,841.04
4. Step 4: Simplify right side
   12,876.60x = 139,321,558.98
5. Step 5: Solve for x
   x = 139,321,558.98/12,876.60
6. Step 6: Final answer
   x = 10,819.75