Finding the Fourth Proportional to 13,101.74, 18,080.86 and 7,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,101.74 : 18,080.86 = 7,436.50 : x
2. Step 2: Convert to fraction form
   13,101.74/18,080.86 = 7,436.50/x
3. Step 3: Cross multiply
   13,101.74x = 18,080.86 × 7,436.50
4. Step 4: Simplify right side
   13,101.74x = 134,458,315.39
5. Step 5: Solve for x
   x = 134,458,315.39/13,101.74
6. Step 6: Final answer
   x = 10,262.63