Finding the Fourth Proportional to 3,115.63, 4,290.82 and 3,047.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,115.63 : 4,290.82 = 3,047.59 : x
2. Step 2: Convert to fraction form
   3,115.63/4,290.82 = 3,047.59/x
3. Step 3: Cross multiply
   3,115.63x = 4,290.82 × 3,047.59
4. Step 4: Simplify right side
   3,115.63x = 13,076,675.01
5. Step 5: Solve for x
   x = 13,076,675.01/3,115.63
6. Step 6: Final answer
   x = 4,197.12