Finding the Fourth Proportional to 13,824.36, 19,077.81 and 7,536.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,824.36 : 19,077.81 = 7,536.72 : x
2. Step 2: Convert to fraction form
   13,824.36/19,077.81 = 7,536.72/x
3. Step 3: Cross multiply
   13,824.36x = 19,077.81 × 7,536.72
4. Step 4: Simplify right side
   13,824.36x = 143,784,112.18
5. Step 5: Solve for x
   x = 143,784,112.18/13,824.36
6. Step 6: Final answer
   x = 10,400.78