Finding the Fourth Proportional to 13,216.18, 18,238.86 and 7,248.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,216.18 : 18,238.86 = 7,248.06 : x
2. Step 2: Convert to fraction form
   13,216.18/18,238.86 = 7,248.06/x
3. Step 3: Cross multiply
   13,216.18x = 18,238.86 × 7,248.06
4. Step 4: Simplify right side
   13,216.18x = 132,196,315.37
5. Step 5: Solve for x
   x = 132,196,315.37/13,216.18
6. Step 6: Final answer
   x = 10,002.61