Finding the Fourth Proportional to 13,773.78, 19,007.82 and 9,066.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,773.78 : 19,007.82 = 9,066.48 : x
2. Step 2: Convert to fraction form
   13,773.78/19,007.82 = 9,066.48/x
3. Step 3: Cross multiply
   13,773.78x = 19,007.82 × 9,066.48
4. Step 4: Simplify right side
   13,773.78x = 172,334,019.87
5. Step 5: Solve for x
   x = 172,334,019.87/13,773.78
6. Step 6: Final answer
   x = 12,511.74