Finding the Fourth Proportional to 12,805.78, 19,219.56 and 5,020.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,805.78 : 19,219.56 = 5,020.06 : x
2. Step 2: Convert to fraction form
   12,805.78/19,219.56 = 5,020.06/x
3. Step 3: Cross multiply
   12,805.78x = 19,219.56 × 5,020.06
4. Step 4: Simplify right side
   12,805.78x = 96,483,344.37
5. Step 5: Solve for x
   x = 96,483,344.37/12,805.78
6. Step 6: Final answer
   x = 7,534.36