Finding the Fourth Proportional to 5,828.64, 7,987.47 and 5,268.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,828.64 : 7,987.47 = 5,268.12 : x
2. Step 2: Convert to fraction form
   5,828.64/7,987.47 = 5,268.12/x
3. Step 3: Cross multiply
   5,828.64x = 7,987.47 × 5,268.12
4. Step 4: Simplify right side
   5,828.64x = 42,078,975.31
5. Step 5: Solve for x
   x = 42,078,975.31/5,828.64
6. Step 6: Final answer
   x = 7,219.34