Finding the Fourth Proportional to 15,641.34, 21,577.83 and 9,013.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,641.34 : 21,577.83 = 9,013.50 : x
2. Step 2: Convert to fraction form
   15,641.34/21,577.83 = 9,013.50/x
3. Step 3: Cross multiply
   15,641.34x = 21,577.83 × 9,013.50
4. Step 4: Simplify right side
   15,641.34x = 194,491,770.71
5. Step 5: Solve for x
   x = 194,491,770.71/15,641.34
6. Step 6: Final answer
   x = 12,434.47