Finding the Fourth Proportional to 3,886.02, 5,362.61 and 2,117.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886.02 : 5,362.61 = 2,117.52 : x
2. Step 2: Convert to fraction form
   3,886.02/5,362.61 = 2,117.52/x
3. Step 3: Cross multiply
   3,886.02x = 5,362.61 × 2,117.52
4. Step 4: Simplify right side
   3,886.02x = 11,355,423.34
5. Step 5: Solve for x
   x = 11,355,423.34/3,886.02
6. Step 6: Final answer
   x = 2,922.12