Finding the Fourth Proportional to 12,851.06, 19,254.56 and 8,626.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,851.06 : 19,254.56 = 8,626.40 : x
2. Step 2: Convert to fraction form
   12,851.06/19,254.56 = 8,626.40/x
3. Step 3: Cross multiply
   12,851.06x = 19,254.56 × 8,626.40
4. Step 4: Simplify right side
   12,851.06x = 166,097,517.71
5. Step 5: Solve for x
   x = 166,097,517.71/12,851.06
6. Step 6: Final answer
   x = 12,924.82