Finding the Fourth Proportional to 13,758.49, 18,986.94 and 7,470.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,758.49 : 18,986.94 = 7,470.88 : x
2. Step 2: Convert to fraction form
   13,758.49/18,986.94 = 7,470.88/x
3. Step 3: Cross multiply
   13,758.49x = 18,986.94 × 7,470.88
4. Step 4: Simplify right side
   13,758.49x = 141,849,150.31
5. Step 5: Solve for x
   x = 141,849,150.31/13,758.49
6. Step 6: Final answer
   x = 10,309.94