Finding the Fourth Proportional to 15,384.41, 21,235.76 and 9,013.05

Step by Step Solution

1. Step 1: Write the proportion equation
   15,384.41 : 21,235.76 = 9,013.05 : x
2. Step 2: Convert to fraction form
   15,384.41/21,235.76 = 9,013.05/x
3. Step 3: Cross multiply
   15,384.41x = 21,235.76 × 9,013.05
4. Step 4: Simplify right side
   15,384.41x = 191,399,019.76
5. Step 5: Solve for x
   x = 191,399,019.76/15,384.41
6. Step 6: Final answer
   x = 12,441.10