Finding the Fourth Proportional to 3,615.52, 4,988.72 and 2,123.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,615.52 : 4,988.72 = 2,123.36 : x
2. Step 2: Convert to fraction form
   3,615.52/4,988.72 = 2,123.36/x
3. Step 3: Cross multiply
   3,615.52x = 4,988.72 × 2,123.36
4. Step 4: Simplify right side
   3,615.52x = 10,592,848.50
5. Step 5: Solve for x
   x = 10,592,848.50/3,615.52
6. Step 6: Final answer
   x = 2,929.83