Finding the Fourth Proportional to 13,026.48, 19,540.62 and 5,235.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,026.48 : 19,540.62 = 5,235.30 : x
2. Step 2: Convert to fraction form
   13,026.48/19,540.62 = 5,235.30/x
3. Step 3: Cross multiply
   13,026.48x = 19,540.62 × 5,235.30
4. Step 4: Simplify right side
   13,026.48x = 102,301,007.89
5. Step 5: Solve for x
   x = 102,301,007.89/13,026.48
6. Step 6: Final answer
   x = 7,853.31