Finding the Fourth Proportional to 13,321.83, 19,966.35 and 4,546.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,321.83 : 19,966.35 = 4,546.50 : x
2. Step 2: Convert to fraction form
   13,321.83/19,966.35 = 4,546.50/x
3. Step 3: Cross multiply
   13,321.83x = 19,966.35 × 4,546.50
4. Step 4: Simplify right side
   13,321.83x = 90,777,010.28
5. Step 5: Solve for x
   x = 90,777,010.28/13,321.83
6. Step 6: Final answer
   x = 6,814.15