Finding the Fourth Proportional to 9,405.51, 12,982.47 and 5,429.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,405.51 : 12,982.47 = 5,429.22 : x
2. Step 2: Convert to fraction form
   9,405.51/12,982.47 = 5,429.22/x
3. Step 3: Cross multiply
   9,405.51x = 12,982.47 × 5,429.22
4. Step 4: Simplify right side
   9,405.51x = 70,484,685.77
5. Step 5: Solve for x
   x = 70,484,685.77/9,405.51
6. Step 6: Final answer
   x = 7,493.98