Finding the Fourth Proportional to 12,665.60, 17,477.28 and 7,076.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.60 : 17,477.28 = 7,076.48 : x
2. Step 2: Convert to fraction form
   12,665.60/17,477.28 = 7,076.48/x
3. Step 3: Cross multiply
   12,665.60x = 17,477.28 × 7,076.48
4. Step 4: Simplify right side
   12,665.60x = 123,677,622.37
5. Step 5: Solve for x
   x = 123,677,622.37/12,665.60
6. Step 6: Final answer
   x = 9,764.85