Finding the Fourth Proportional to 9,664.84, 13,343.90 and 7,422.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,664.84 : 13,343.90 = 7,422.71 : x
2. Step 2: Convert to fraction form
   9,664.84/13,343.90 = 7,422.71/x
3. Step 3: Cross multiply
   9,664.84x = 13,343.90 × 7,422.71
4. Step 4: Simplify right side
   9,664.84x = 99,047,837.89
5. Step 5: Solve for x
   x = 99,047,837.89/9,664.84
6. Step 6: Final answer
   x = 10,248.27