Finding the Fourth Proportional to 9,419.29, 12,973.65 and 7,021.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,419.29 : 12,973.65 = 7,021.58 : x
2. Step 2: Convert to fraction form
   9,419.29/12,973.65 = 7,021.58/x
3. Step 3: Cross multiply
   9,419.29x = 12,973.65 × 7,021.58
4. Step 4: Simplify right side
   9,419.29x = 91,095,456.50
5. Step 5: Solve for x
   x = 91,095,456.50/9,419.29
6. Step 6: Final answer
   x = 9,671.16