Finding the Fourth Proportional to 3,686.02, 5,085.54 and 2,113.84

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686.02 : 5,085.54 = 2,113.84 : x
2. Step 2: Convert to fraction form
   3,686.02/5,085.54 = 2,113.84/x
3. Step 3: Cross multiply
   3,686.02x = 5,085.54 × 2,113.84
4. Step 4: Simplify right side
   3,686.02x = 10,750,017.87
5. Step 5: Solve for x
   x = 10,750,017.87/3,686.02
6. Step 6: Final answer
   x = 2,916.43