Finding the Fourth Proportional to 13,303.50, 19,958.64 and 3,943.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,303.50 : 19,958.64 = 3,943.86 : x
2. Step 2: Convert to fraction form
   13,303.50/19,958.64 = 3,943.86/x
3. Step 3: Cross multiply
   13,303.50x = 19,958.64 × 3,943.86
4. Step 4: Simplify right side
   13,303.50x = 78,714,081.95
5. Step 5: Solve for x
   x = 78,714,081.95/13,303.50
6. Step 6: Final answer
   x = 5,916.79