Finding the Fourth Proportional to 10,589.15, 14,615.68 and 7,191.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,589.15 : 14,615.68 = 7,191.91 : x
2. Step 2: Convert to fraction form
   10,589.15/14,615.68 = 7,191.91/x
3. Step 3: Cross multiply
   10,589.15x = 14,615.68 × 7,191.91
4. Step 4: Simplify right side
   10,589.15x = 105,114,655.15
5. Step 5: Solve for x
   x = 105,114,655.15/10,589.15
6. Step 6: Final answer
   x = 9,926.64