Finding the Fourth Proportional to 13,337.72, 18,408.30 and 7,751.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,337.72 : 18,408.30 = 7,751.96 : x
2. Step 2: Convert to fraction form
   13,337.72/18,408.30 = 7,751.96/x
3. Step 3: Cross multiply
   13,337.72x = 18,408.30 × 7,751.96
4. Step 4: Simplify right side
   13,337.72x = 142,700,405.27
5. Step 5: Solve for x
   x = 142,700,405.27/13,337.72
6. Step 6: Final answer
   x = 10,699.01