Finding the Fourth Proportional to 9,131.40, 13,698.72 and 3,585.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.40 : 13,698.72 = 3,585.06 : x
2. Step 2: Convert to fraction form
   9,131.40/13,698.72 = 3,585.06/x
3. Step 3: Cross multiply
   9,131.40x = 13,698.72 × 3,585.06
4. Step 4: Simplify right side
   9,131.40x = 49,110,733.12
5. Step 5: Solve for x
   x = 49,110,733.12/9,131.40
6. Step 6: Final answer
   x = 5,378.23