Finding the Fourth Proportional to 9,071.25, 13,601.60 and 3,518.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,071.25 : 13,601.60 = 3,518.10 : x
2. Step 2: Convert to fraction form
   9,071.25/13,601.60 = 3,518.10/x
3. Step 3: Cross multiply
   9,071.25x = 13,601.60 × 3,518.10
4. Step 4: Simplify right side
   9,071.25x = 47,851,771.37
5. Step 5: Solve for x
   x = 47,851,771.37/9,071.25
6. Step 6: Final answer
   x = 5,275.10