Finding the Fourth Proportional to 13,081.50, 19,622.18 and 7,250.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.50 : 19,622.18 = 7,250.45 : x
2. Step 2: Convert to fraction form
   13,081.50/19,622.18 = 7,250.45/x
3. Step 3: Cross multiply
   13,081.50x = 19,622.18 × 7,250.45
4. Step 4: Simplify right side
   13,081.50x = 142,269,555.00
5. Step 5: Solve for x
   x = 142,269,555.00/13,081.50
6. Step 6: Final answer
   x = 10,875.63