Finding the Fourth Proportional to 9,071.36, 13,606.01 and 3,147.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,071.36 : 13,606.01 = 3,147.15 : x
2. Step 2: Convert to fraction form
   9,071.36/13,606.01 = 3,147.15/x
3. Step 3: Cross multiply
   9,071.36x = 13,606.01 × 3,147.15
4. Step 4: Simplify right side
   9,071.36x = 42,820,201.46
5. Step 5: Solve for x
   x = 42,820,201.46/9,071.36
6. Step 6: Final answer
   x = 4,720.37