Finding the Fourth Proportional to 13,023.67, 19,538.60 and 4,258.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,023.67 : 19,538.60 = 4,258.56 : x
2. Step 2: Convert to fraction form
   13,023.67/19,538.60 = 4,258.56/x
3. Step 3: Cross multiply
   13,023.67x = 19,538.60 × 4,258.56
4. Step 4: Simplify right side
   13,023.67x = 83,206,300.42
5. Step 5: Solve for x
   x = 83,206,300.42/13,023.67
6. Step 6: Final answer
   x = 6,388.85