Finding the Fourth Proportional to 13,012.50, 19,518.06 and 3,653.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.50 : 19,518.06 = 3,653.18 : x
2. Step 2: Convert to fraction form
   13,012.50/19,518.06 = 3,653.18/x
3. Step 3: Cross multiply
   13,012.50x = 19,518.06 × 3,653.18
4. Step 4: Simplify right side
   13,012.50x = 71,302,986.43
5. Step 5: Solve for x
   x = 71,302,986.43/13,012.50
6. Step 6: Final answer
   x = 5,479.58