Finding the Fourth Proportional to 3,696.08, 5,100.72 and 2,123.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,696.08 : 5,100.72 = 2,123.88 : x
2. Step 2: Convert to fraction form
   3,696.08/5,100.72 = 2,123.88/x
3. Step 3: Cross multiply
   3,696.08x = 5,100.72 × 2,123.88
4. Step 4: Simplify right side
   3,696.08x = 10,833,317.19
5. Step 5: Solve for x
   x = 10,833,317.19/3,696.08
6. Step 6: Final answer
   x = 2,931.03