Finding the Fourth Proportional to 10,791, 14,884.62 and 7,641.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,791 : 14,884.62 = 7,641.72 : x
2. Step 2: Convert to fraction form
   10,791/14,884.62 = 7,641.72/x
3. Step 3: Cross multiply
   10,791x = 14,884.62 × 7,641.72
4. Step 4: Simplify right side
   10,791x = 113,744,098.35
5. Step 5: Solve for x
   x = 113,744,098.35/10,791
6. Step 6: Final answer
   x = 10,540.64