Finding the Fourth Proportional to 13,550.78, 18,697.83 and 7,962.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,550.78 : 18,697.83 = 7,962.86 : x
2. Step 2: Convert to fraction form
   13,550.78/18,697.83 = 7,962.86/x
3. Step 3: Cross multiply
   13,550.78x = 18,697.83 × 7,962.86
4. Step 4: Simplify right side
   13,550.78x = 148,888,202.59
5. Step 5: Solve for x
   x = 148,888,202.59/13,550.78
6. Step 6: Final answer
   x = 10,987.43