Finding the Fourth Proportional to 13,816.12, 19,066.23 and 7,528.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,816.12 : 19,066.23 = 7,528.49 : x
2. Step 2: Convert to fraction form
   13,816.12/19,066.23 = 7,528.49/x
3. Step 3: Cross multiply
   13,816.12x = 19,066.23 × 7,528.49
4. Step 4: Simplify right side
   13,816.12x = 143,539,921.89
5. Step 5: Solve for x
   x = 143,539,921.89/13,816.12
6. Step 6: Final answer
   x = 10,389.31