Finding the Fourth Proportional to 9,071.07, 13,605.59 and 3,146.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,071.07 : 13,605.59 = 3,146.87 : x
2. Step 2: Convert to fraction form
   9,071.07/13,605.59 = 3,146.87/x
3. Step 3: Cross multiply
   9,071.07x = 13,605.59 × 3,146.87
4. Step 4: Simplify right side
   9,071.07x = 42,814,970.65
5. Step 5: Solve for x
   x = 42,814,970.65/9,071.07
6. Step 6: Final answer
   x = 4,719.95