Finding the Fourth Proportional to 12,137.50, 18,174.93 and 7,210.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,137.50 : 18,174.93 = 7,210.54 : x
2. Step 2: Convert to fraction form
   12,137.50/18,174.93 = 7,210.54/x
3. Step 3: Cross multiply
   12,137.50x = 18,174.93 × 7,210.54
4. Step 4: Simplify right side
   12,137.50x = 131,051,059.76
5. Step 5: Solve for x
   x = 131,051,059.76/12,137.50
6. Step 6: Final answer
   x = 10,797.20