Finding the Fourth Proportional to 12,815.82, 19,224.72 and 4,922.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,815.82 : 19,224.72 = 4,922.13 : x
2. Step 2: Convert to fraction form
   12,815.82/19,224.72 = 4,922.13/x
3. Step 3: Cross multiply
   12,815.82x = 19,224.72 × 4,922.13
4. Step 4: Simplify right side
   12,815.82x = 94,626,571.05
5. Step 5: Solve for x
   x = 94,626,571.05/12,815.82
6. Step 6: Final answer
   x = 7,383.58