Finding the Fourth Proportional to 10,067.79, 13,892.01 and 5,591.13

Step by Step Solution

1. Step 1: Write the proportion equation
   10,067.79 : 13,892.01 = 5,591.13 : x
2. Step 2: Convert to fraction form
   10,067.79/13,892.01 = 5,591.13/x
3. Step 3: Cross multiply
   10,067.79x = 13,892.01 × 5,591.13
4. Step 4: Simplify right side
   10,067.79x = 77,671,960.81
5. Step 5: Solve for x
   x = 77,671,960.81/10,067.79
6. Step 6: Final answer
   x = 7,714.89