Finding the Fourth Proportional to 12,966.36, 17,893.98 and 7,377.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,966.36 : 17,893.98 = 7,377.72 : x
2. Step 2: Convert to fraction form
   12,966.36/17,893.98 = 7,377.72/x
3. Step 3: Cross multiply
   12,966.36x = 17,893.98 × 7,377.72
4. Step 4: Simplify right side
   12,966.36x = 132,016,774.13
5. Step 5: Solve for x
   x = 132,016,774.13/12,966.36
6. Step 6: Final answer
   x = 10,181.48