Finding the Fourth Proportional to 9,198.22, 12,693.14 and 5,109.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,198.22 : 12,693.14 = 5,109.78 : x
2. Step 2: Convert to fraction form
   9,198.22/12,693.14 = 5,109.78/x
3. Step 3: Cross multiply
   9,198.22x = 12,693.14 × 5,109.78
4. Step 4: Simplify right side
   9,198.22x = 64,859,152.91
5. Step 5: Solve for x
   x = 64,859,152.91/9,198.22
6. Step 6: Final answer
   x = 7,051.27