Finding the Fourth Proportional to 12,007.42, 16,579.02 and 7,761

Step by Step Solution

1. Step 1: Write the proportion equation
   12,007.42 : 16,579.02 = 7,761 : x
2. Step 2: Convert to fraction form
   12,007.42/16,579.02 = 7,761/x
3. Step 3: Cross multiply
   12,007.42x = 16,579.02 × 7,761
4. Step 4: Simplify right side
   12,007.42x = 128,669,774.22
5. Step 5: Solve for x
   x = 128,669,774.22/12,007.42
6. Step 6: Final answer
   x = 10,715.86