Finding the Fourth Proportional to 10,654.88, 14,705.12 and 7,680.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,654.88 : 14,705.12 = 7,680.56 : x
2. Step 2: Convert to fraction form
   10,654.88/14,705.12 = 7,680.56/x
3. Step 3: Cross multiply
   10,654.88x = 14,705.12 × 7,680.56
4. Step 4: Simplify right side
   10,654.88x = 112,943,556.47
5. Step 5: Solve for x
   x = 112,943,556.47/10,654.88
6. Step 6: Final answer
   x = 10,600.17