Finding the Fourth Proportional to 3,970.63, 5,959.52 and 2,123.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,970.63 : 5,959.52 = 2,123.33 : x
2. Step 2: Convert to fraction form
   3,970.63/5,959.52 = 2,123.33/x
3. Step 3: Cross multiply
   3,970.63x = 5,959.52 × 2,123.33
4. Step 4: Simplify right side
   3,970.63x = 12,653,987.19
5. Step 5: Solve for x
   x = 12,653,987.19/3,970.63
6. Step 6: Final answer
   x = 3,186.90