Finding the Fourth Proportional to 12,653.64, 17,452.59 and 11,219.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,653.64 : 17,452.59 = 11,219.69 : x
2. Step 2: Convert to fraction form
   12,653.64/17,452.59 = 11,219.69/x
3. Step 3: Cross multiply
   12,653.64x = 17,452.59 × 11,219.69
4. Step 4: Simplify right side
   12,653.64x = 195,812,633.52
5. Step 5: Solve for x
   x = 195,812,633.52/12,653.64
6. Step 6: Final answer
   x = 15,474.80