Finding the Fourth Proportional to 9,198.31, 12,693.29 and 5,219.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,198.31 : 12,693.29 = 5,219.34 : x
2. Step 2: Convert to fraction form
   9,198.31/12,693.29 = 5,219.34/x
3. Step 3: Cross multiply
   9,198.31x = 12,693.29 × 5,219.34
4. Step 4: Simplify right side
   9,198.31x = 66,250,551.89
5. Step 5: Solve for x
   x = 66,250,551.89/9,198.31
6. Step 6: Final answer
   x = 7,202.47