Finding the Fourth Proportional to 13,077.50, 18,049.38 and 7,488.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,077.50 : 18,049.38 = 7,488.50 : x
2. Step 2: Convert to fraction form
   13,077.50/18,049.38 = 7,488.50/x
3. Step 3: Cross multiply
   13,077.50x = 18,049.38 × 7,488.50
4. Step 4: Simplify right side
   13,077.50x = 135,162,782.13
5. Step 5: Solve for x
   x = 135,162,782.13/13,077.50
6. Step 6: Final answer
   x = 10,335.52