Finding the Fourth Proportional to 7,216.29, 10,779.89 and 5,224.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,216.29 : 10,779.89 = 5,224.80 : x
2. Step 2: Convert to fraction form
   7,216.29/10,779.89 = 5,224.80/x
3. Step 3: Cross multiply
   7,216.29x = 10,779.89 × 5,224.80
4. Step 4: Simplify right side
   7,216.29x = 56,322,783.57
5. Step 5: Solve for x
   x = 56,322,783.57/7,216.29
6. Step 6: Final answer
   x = 7,804.95