Finding the Fourth Proportional to 13,693.24, 18,896.61 and 7,405.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,693.24 : 18,896.61 = 7,405.62 : x
2. Step 2: Convert to fraction form
   13,693.24/18,896.61 = 7,405.62/x
3. Step 3: Cross multiply
   13,693.24x = 18,896.61 × 7,405.62
4. Step 4: Simplify right side
   13,693.24x = 139,941,112.95
5. Step 5: Solve for x
   x = 139,941,112.95/13,693.24
6. Step 6: Final answer
   x = 10,219.72