Finding the Fourth Proportional to 13,423.72, 18,523.38 and 7,837.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,423.72 : 18,523.38 = 7,837.96 : x
2. Step 2: Convert to fraction form
   13,423.72/18,523.38 = 7,837.96/x
3. Step 3: Cross multiply
   13,423.72x = 18,523.38 × 7,837.96
4. Step 4: Simplify right side
   13,423.72x = 145,185,511.50
5. Step 5: Solve for x
   x = 145,185,511.50/13,423.72
6. Step 6: Final answer
   x = 10,815.59