Finding the Fourth Proportional to 12,847.02, 19,238.40 and 8,152.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,847.02 : 19,238.40 = 8,152.80 : x
2. Step 2: Convert to fraction form
   12,847.02/19,238.40 = 8,152.80/x
3. Step 3: Cross multiply
   12,847.02x = 19,238.40 × 8,152.80
4. Step 4: Simplify right side
   12,847.02x = 156,846,827.52
5. Step 5: Solve for x
   x = 156,846,827.52/12,847.02
6. Step 6: Final answer
   x = 12,208.81