Finding the Fourth Proportional to 12,299.19, 18,448.89 and 3,534.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,299.19 : 18,448.89 = 3,534.10 : x
2. Step 2: Convert to fraction form
   12,299.19/18,448.89 = 3,534.10/x
3. Step 3: Cross multiply
   12,299.19x = 18,448.89 × 3,534.10
4. Step 4: Simplify right side
   12,299.19x = 65,200,162.77
5. Step 5: Solve for x
   x = 65,200,162.77/12,299.19
6. Step 6: Final answer
   x = 5,301.18