Finding the Fourth Proportional to 13,815.84, 19,066.23 and 7,528.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,815.84 : 19,066.23 = 7,528.62 : x
2. Step 2: Convert to fraction form
   13,815.84/19,066.23 = 7,528.62/x
3. Step 3: Cross multiply
   13,815.84x = 19,066.23 × 7,528.62
4. Step 4: Simplify right side
   13,815.84x = 143,542,400.50
5. Step 5: Solve for x
   x = 143,542,400.50/13,815.84
6. Step 6: Final answer
   x = 10,389.70