Finding the Fourth Proportional to 9,001.58, 12,421.59 and 5,644.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,001.58 : 12,421.59 = 5,644.25 : x
2. Step 2: Convert to fraction form
   9,001.58/12,421.59 = 5,644.25/x
3. Step 3: Cross multiply
   9,001.58x = 12,421.59 × 5,644.25
4. Step 4: Simplify right side
   9,001.58x = 70,110,559.36
5. Step 5: Solve for x
   x = 70,110,559.36/9,001.58
6. Step 6: Final answer
   x = 7,788.69