Finding the Fourth Proportional to 12,807.50, 17,688.93 and 8,608.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,807.50 : 17,688.93 = 8,608.46 : x
2. Step 2: Convert to fraction form
   12,807.50/17,688.93 = 8,608.46/x
3. Step 3: Cross multiply
   12,807.50x = 17,688.93 × 8,608.46
4. Step 4: Simplify right side
   12,807.50x = 152,274,446.35
5. Step 5: Solve for x
   x = 152,274,446.35/12,807.50
6. Step 6: Final answer
   x = 11,889.47