Finding the Fourth Proportional to 11,925.72, 17,894.88 and 8,665.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,925.72 : 17,894.88 = 8,665.76 : x
2. Step 2: Convert to fraction form
   11,925.72/17,894.88 = 8,665.76/x
3. Step 3: Cross multiply
   11,925.72x = 17,894.88 × 8,665.76
4. Step 4: Simplify right side
   11,925.72x = 155,072,735.31
5. Step 5: Solve for x
   x = 155,072,735.31/11,925.72
6. Step 6: Final answer
   x = 13,003.22