Finding the Fourth Proportional to 13,816.05, 19,066.15 and 7,528.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,816.05 : 19,066.15 = 7,528.42 : x
2. Step 2: Convert to fraction form
   13,816.05/19,066.15 = 7,528.42/x
3. Step 3: Cross multiply
   13,816.05x = 19,066.15 × 7,528.42
4. Step 4: Simplify right side
   13,816.05x = 143,537,984.98
5. Step 5: Solve for x
   x = 143,537,984.98/13,816.05
6. Step 6: Final answer
   x = 10,389.22