Finding the Fourth Proportional to 9,001.80, 12,422.16 and 5,646.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,001.80 : 12,422.16 = 5,646.42 : x
2. Step 2: Convert to fraction form
   9,001.80/12,422.16 = 5,646.42/x
3. Step 3: Cross multiply
   9,001.80x = 12,422.16 × 5,646.42
4. Step 4: Simplify right side
   9,001.80x = 70,140,732.67
5. Step 5: Solve for x
   x = 70,140,732.67/9,001.80
6. Step 6: Final answer
   x = 7,791.86