Finding the Fourth Proportional to 5,365.86, 7,988.69 and 5,339.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,365.86 : 7,988.69 = 5,339.89 : x
2. Step 2: Convert to fraction form
   5,365.86/7,988.69 = 5,339.89/x
3. Step 3: Cross multiply
   5,365.86x = 7,988.69 × 5,339.89
4. Step 4: Simplify right side
   5,365.86x = 42,658,725.84
5. Step 5: Solve for x
   x = 42,658,725.84/5,365.86
6. Step 6: Final answer
   x = 7,950.03