Finding the Fourth Proportional to 9,123.93, 13,687.38 and 3,504.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.93 : 13,687.38 = 3,504.15 : x
2. Step 2: Convert to fraction form
   9,123.93/13,687.38 = 3,504.15/x
3. Step 3: Cross multiply
   9,123.93x = 13,687.38 × 3,504.15
4. Step 4: Simplify right side
   9,123.93x = 47,962,632.63
5. Step 5: Solve for x
   x = 47,962,632.63/9,123.93
6. Step 6: Final answer
   x = 5,256.80