Finding the Fourth Proportional to 3,790.38, 5,230.72 and 2,112.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,790.38 : 5,230.72 = 2,112.10 : x
2. Step 2: Convert to fraction form
   3,790.38/5,230.72 = 2,112.10/x
3. Step 3: Cross multiply
   3,790.38x = 5,230.72 × 2,112.10
4. Step 4: Simplify right side
   3,790.38x = 11,047,803.71
5. Step 5: Solve for x
   x = 11,047,803.71/3,790.38
6. Step 6: Final answer
   x = 2,914.70