Finding the Fourth Proportional to 13,618.56, 18,792.61 and 7,651.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,618.56 : 18,792.61 = 7,651.23 : x
2. Step 2: Convert to fraction form
   13,618.56/18,792.61 = 7,651.23/x
3. Step 3: Cross multiply
   13,618.56x = 18,792.61 × 7,651.23
4. Step 4: Simplify right side
   13,618.56x = 143,786,491.81
5. Step 5: Solve for x
   x = 143,786,491.81/13,618.56
6. Step 6: Final answer
   x = 10,558.12