Finding the Fourth Proportional to 9,209.98, 13,811.52 and 2,971.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,209.98 : 13,811.52 = 2,971.60 : x
2. Step 2: Convert to fraction form
   9,209.98/13,811.52 = 2,971.60/x
3. Step 3: Cross multiply
   9,209.98x = 13,811.52 × 2,971.60
4. Step 4: Simplify right side
   9,209.98x = 41,042,312.83
5. Step 5: Solve for x
   x = 41,042,312.83/9,209.98
6. Step 6: Final answer
   x = 4,456.29