Finding the Fourth Proportional to 10,067.88, 13,892.07 and 5,591.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,067.88 : 13,892.07 = 5,591.55 : x
2. Step 2: Convert to fraction form
   10,067.88/13,892.07 = 5,591.55/x
3. Step 3: Cross multiply
   10,067.88x = 13,892.07 × 5,591.55
4. Step 4: Simplify right side
   10,067.88x = 77,678,204.01
5. Step 5: Solve for x
   x = 77,678,204.01/10,067.88
6. Step 6: Final answer
   x = 7,715.45