Finding the Fourth Proportional to 5,322.21, 7,345.89 and 3,085.32

Step by Step Solution

1. Step 1: Write the proportion equation
   5,322.21 : 7,345.89 = 3,085.32 : x
2. Step 2: Convert to fraction form
   5,322.21/7,345.89 = 3,085.32/x
3. Step 3: Cross multiply
   5,322.21x = 7,345.89 × 3,085.32
4. Step 4: Simplify right side
   5,322.21x = 22,664,448.88
5. Step 5: Solve for x
   x = 22,664,448.88/5,322.21
6. Step 6: Final answer
   x = 4,258.47