Finding the Fourth Proportional to 13,405.29, 18,499.15 and 7,437

Step by Step Solution

1. Step 1: Write the proportion equation
   13,405.29 : 18,499.15 = 7,437 : x
2. Step 2: Convert to fraction form
   13,405.29/18,499.15 = 7,437/x
3. Step 3: Cross multiply
   13,405.29x = 18,499.15 × 7,437
4. Step 4: Simplify right side
   13,405.29x = 137,578,178.55
5. Step 5: Solve for x
   x = 137,578,178.55/13,405.29
6. Step 6: Final answer
   x = 10,262.98