Finding the Fourth Proportional to 7,402.21, 10,215.53 and 4,258.33

Step by Step Solution

1. Step 1: Write the proportion equation
   7,402.21 : 10,215.53 = 4,258.33 : x
2. Step 2: Convert to fraction form
   7,402.21/10,215.53 = 4,258.33/x
3. Step 3: Cross multiply
   7,402.21x = 10,215.53 × 4,258.33
4. Step 4: Simplify right side
   7,402.21x = 43,501,097.86
5. Step 5: Solve for x
   x = 43,501,097.86/7,402.21
6. Step 6: Final answer
   x = 5,876.77