Finding the Fourth Proportional to 4,790.01, 7,186.79 and 2,156.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,790.01 : 7,186.79 = 2,156.72 : x
2. Step 2: Convert to fraction form
   4,790.01/7,186.79 = 2,156.72/x
3. Step 3: Cross multiply
   4,790.01x = 7,186.79 × 2,156.72
4. Step 4: Simplify right side
   4,790.01x = 15,499,893.73
5. Step 5: Solve for x
   x = 15,499,893.73/4,790.01
6. Step 6: Final answer
   x = 3,235.88