Finding the Fourth Proportional to 13,818.63, 19,069.71 and 7,531

Step by Step Solution

1. Step 1: Write the proportion equation
   13,818.63 : 19,069.71 = 7,531 : x
2. Step 2: Convert to fraction form
   13,818.63/19,069.71 = 7,531/x
3. Step 3: Cross multiply
   13,818.63x = 19,069.71 × 7,531
4. Step 4: Simplify right side
   13,818.63x = 143,613,986.01
5. Step 5: Solve for x
   x = 143,613,986.01/13,818.63
6. Step 6: Final answer
   x = 10,392.78