Finding the Fourth Proportional to 12,906.16, 19,322.52 and 8,510.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,906.16 : 19,322.52 = 8,510.20 : x
2. Step 2: Convert to fraction form
   12,906.16/19,322.52 = 8,510.20/x
3. Step 3: Cross multiply
   12,906.16x = 19,322.52 × 8,510.20
4. Step 4: Simplify right side
   12,906.16x = 164,438,509.70
5. Step 5: Solve for x
   x = 164,438,509.70/12,906.16
6. Step 6: Final answer
   x = 12,741.09