Finding the Fourth Proportional to 3,279.47, 4,915.02 and 2,109.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,279.47 : 4,915.02 = 2,109.02 : x
2. Step 2: Convert to fraction form
   3,279.47/4,915.02 = 2,109.02/x
3. Step 3: Cross multiply
   3,279.47x = 4,915.02 × 2,109.02
4. Step 4: Simplify right side
   3,279.47x = 10,365,875.48
5. Step 5: Solve for x
   x = 10,365,875.48/3,279.47
6. Step 6: Final answer
   x = 3,160.84