Finding the Fourth Proportional to 13,499.05, 18,620.67 and 10,510.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,499.05 : 18,620.67 = 10,510.15 : x
2. Step 2: Convert to fraction form
   13,499.05/18,620.67 = 10,510.15/x
3. Step 3: Cross multiply
   13,499.05x = 18,620.67 × 10,510.15
4. Step 4: Simplify right side
   13,499.05x = 195,706,034.80
5. Step 5: Solve for x
   x = 195,706,034.80/13,499.05
6. Step 6: Final answer
   x = 14,497.76