Finding the Fourth Proportional to 3,572.34, 4,930.32 and 2,156.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,572.34 : 4,930.32 = 2,156.10 : x
2. Step 2: Convert to fraction form
   3,572.34/4,930.32 = 2,156.10/x
3. Step 3: Cross multiply
   3,572.34x = 4,930.32 × 2,156.10
4. Step 4: Simplify right side
   3,572.34x = 10,630,262.95
5. Step 5: Solve for x
   x = 10,630,262.95/3,572.34
6. Step 6: Final answer
   x = 2,975.71