Finding the Fourth Proportional to 11,815.83, 17,722.72 and 3,917.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,815.83 : 17,722.72 = 3,917.52 : x
2. Step 2: Convert to fraction form
   11,815.83/17,722.72 = 3,917.52/x
3. Step 3: Cross multiply
   11,815.83x = 17,722.72 × 3,917.52
4. Step 4: Simplify right side
   11,815.83x = 69,429,110.05
5. Step 5: Solve for x
   x = 69,429,110.05/11,815.83
6. Step 6: Final answer
   x = 5,875.94