Finding the Fourth Proportional to 13,695.96, 18,900.42 and 7,408.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,695.96 : 18,900.42 = 7,408.32 : x
2. Step 2: Convert to fraction form
   13,695.96/18,900.42 = 7,408.32/x
3. Step 3: Cross multiply
   13,695.96x = 18,900.42 × 7,408.32
4. Step 4: Simplify right side
   13,695.96x = 140,020,359.49
5. Step 5: Solve for x
   x = 140,020,359.49/13,695.96
6. Step 6: Final answer
   x = 10,223.48