Finding the Fourth Proportional to 9,212.54, 13,820.18 and 2,970.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,212.54 : 13,820.18 = 2,970.50 : x
2. Step 2: Convert to fraction form
   9,212.54/13,820.18 = 2,970.50/x
3. Step 3: Cross multiply
   9,212.54x = 13,820.18 × 2,970.50
4. Step 4: Simplify right side
   9,212.54x = 41,052,760.74
5. Step 5: Solve for x
   x = 41,052,760.74/9,212.54
6. Step 6: Final answer
   x = 4,456.19