Finding the Fourth Proportional to 13,194.72, 18,208.98 and 7,226.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,194.72 : 18,208.98 = 7,226.34 : x
2. Step 2: Convert to fraction form
   13,194.72/18,208.98 = 7,226.34/x
3. Step 3: Cross multiply
   13,194.72x = 18,208.98 × 7,226.34
4. Step 4: Simplify right side
   13,194.72x = 131,584,280.53
5. Step 5: Solve for x
   x = 131,584,280.53/13,194.72
6. Step 6: Final answer
   x = 9,972.50