Finding the Fourth Proportional to 9,131.53, 13,698.06 and 2,557.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.53 : 13,698.06 = 2,557.71 : x
2. Step 2: Convert to fraction form
   9,131.53/13,698.06 = 2,557.71/x
3. Step 3: Cross multiply
   9,131.53x = 13,698.06 × 2,557.71
4. Step 4: Simplify right side
   9,131.53x = 35,035,665.04
5. Step 5: Solve for x
   x = 35,035,665.04/9,131.53
6. Step 6: Final answer
   x = 3,836.78