Finding the Fourth Proportional to 11,868.35, 16,389.20 and 9,527.63

Step by Step Solution

1. Step 1: Write the proportion equation
   11,868.35 : 16,389.20 = 9,527.63 : x
2. Step 2: Convert to fraction form
   11,868.35/16,389.20 = 9,527.63/x
3. Step 3: Cross multiply
   11,868.35x = 16,389.20 × 9,527.63
4. Step 4: Simplify right side
   11,868.35x = 156,150,233.60
5. Step 5: Solve for x
   x = 156,150,233.60/11,868.35
6. Step 6: Final answer
   x = 13,156.86