Finding the Fourth Proportional to 14,300.60, 19,734.80 and 8,711.60

Step by Step Solution

1. Step 1: Write the proportion equation
   14,300.60 : 19,734.80 = 8,711.60 : x
2. Step 2: Convert to fraction form
   14,300.60/19,734.80 = 8,711.60/x
3. Step 3: Cross multiply
   14,300.60x = 19,734.80 × 8,711.60
4. Step 4: Simplify right side
   14,300.60x = 171,921,541.45
5. Step 5: Solve for x
   x = 171,921,541.45/14,300.60
6. Step 6: Final answer
   x = 12,021.99