Finding the Fourth Proportional to 13,152.66, 19,728.83 and 3,917.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,152.66 : 19,728.83 = 3,917.94 : x
2. Step 2: Convert to fraction form
   13,152.66/19,728.83 = 3,917.94/x
3. Step 3: Cross multiply
   13,152.66x = 19,728.83 × 3,917.94
4. Step 4: Simplify right side
   13,152.66x = 77,296,372.21
5. Step 5: Solve for x
   x = 77,296,372.21/13,152.66
6. Step 6: Final answer
   x = 5,876.86