Finding the Fourth Proportional to 10,065.67, 13,892.31 and 5,590.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,065.67 : 13,892.31 = 5,590.89 : x
2. Step 2: Convert to fraction form
   10,065.67/13,892.31 = 5,590.89/x
3. Step 3: Cross multiply
   10,065.67x = 13,892.31 × 5,590.89
4. Step 4: Simplify right side
   10,065.67x = 77,670,377.06
5. Step 5: Solve for x
   x = 77,670,377.06/10,065.67
6. Step 6: Final answer
   x = 7,716.37