Finding the Fourth Proportional to 13,017.48, 19,483.43 and 7,085.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,017.48 : 19,483.43 = 7,085.31 : x
2. Step 2: Convert to fraction form
   13,017.48/19,483.43 = 7,085.31/x
3. Step 3: Cross multiply
   13,017.48x = 19,483.43 × 7,085.31
4. Step 4: Simplify right side
   13,017.48x = 138,046,105.99
5. Step 5: Solve for x
   x = 138,046,105.99/13,017.48
6. Step 6: Final answer
   x = 10,604.67