Finding the Fourth Proportional to 13,648.52, 18,834.98 and 7,680.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,648.52 : 18,834.98 = 7,680.52 : x
2. Step 2: Convert to fraction form
   13,648.52/18,834.98 = 7,680.52/x
3. Step 3: Cross multiply
   13,648.52x = 18,834.98 × 7,680.52
4. Step 4: Simplify right side
   13,648.52x = 144,662,440.59
5. Step 5: Solve for x
   x = 144,662,440.59/13,648.52
6. Step 6: Final answer
   x = 10,599.13