Finding the Fourth Proportional to 12,960.04, 17,887.38 and 7,654.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,960.04 : 17,887.38 = 7,654.60 : x
2. Step 2: Convert to fraction form
   12,960.04/17,887.38 = 7,654.60/x
3. Step 3: Cross multiply
   12,960.04x = 17,887.38 × 7,654.60
4. Step 4: Simplify right side
   12,960.04x = 136,920,738.95
5. Step 5: Solve for x
   x = 136,920,738.95/12,960.04
6. Step 6: Final answer
   x = 10,564.84