Finding the Fourth Proportional to 13,812.47, 19,061.30 and 7,524.85

Step by Step Solution

1. Step 1: Write the proportion equation
   13,812.47 : 19,061.30 = 7,524.85 : x
2. Step 2: Convert to fraction form
   13,812.47/19,061.30 = 7,524.85/x
3. Step 3: Cross multiply
   13,812.47x = 19,061.30 × 7,524.85
4. Step 4: Simplify right side
   13,812.47x = 143,433,423.31
5. Step 5: Solve for x
   x = 143,433,423.31/13,812.47
6. Step 6: Final answer
   x = 10,384.34