Finding the Fourth Proportional to 7,860.33, 10,851.75 and 5,211.34

Step by Step Solution

1. Step 1: Write the proportion equation
   7,860.33 : 10,851.75 = 5,211.34 : x
2. Step 2: Convert to fraction form
   7,860.33/10,851.75 = 5,211.34/x
3. Step 3: Cross multiply
   7,860.33x = 10,851.75 × 5,211.34
4. Step 4: Simplify right side
   7,860.33x = 56,552,131.72
5. Step 5: Solve for x
   x = 56,552,131.72/7,860.33
6. Step 6: Final answer
   x = 7,194.63