Finding the Fourth Proportional to 11,892.78, 17,838.63 and 5,655.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,892.78 : 17,838.63 = 5,655.78 : x
2. Step 2: Convert to fraction form
   11,892.78/17,838.63 = 5,655.78/x
3. Step 3: Cross multiply
   11,892.78x = 17,838.63 × 5,655.78
4. Step 4: Simplify right side
   11,892.78x = 100,891,366.78
5. Step 5: Solve for x
   x = 100,891,366.78/11,892.78
6. Step 6: Final answer
   x = 8,483.41