Finding the Fourth Proportional to 10,067.80, 13,892.02 and 5,591.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,067.80 : 13,892.02 = 5,591.48 : x
2. Step 2: Convert to fraction form
   10,067.80/13,892.02 = 5,591.48/x
3. Step 3: Cross multiply
   10,067.80x = 13,892.02 × 5,591.48
4. Step 4: Simplify right side
   10,067.80x = 77,676,951.99
5. Step 5: Solve for x
   x = 77,676,951.99/10,067.80
6. Step 6: Final answer
   x = 7,715.38