Finding the Fourth Proportional to 12,813.12, 19,222.56 and 5,022.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,813.12 : 19,222.56 = 5,022.72 : x
2. Step 2: Convert to fraction form
   12,813.12/19,222.56 = 5,022.72/x
3. Step 3: Cross multiply
   12,813.12x = 19,222.56 × 5,022.72
4. Step 4: Simplify right side
   12,813.12x = 96,549,536.56
5. Step 5: Solve for x
   x = 96,549,536.56/12,813.12
6. Step 6: Final answer
   x = 7,535.21