Finding the Fourth Proportional to 9,145.89, 12,621.96 and 5,562.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,145.89 : 12,621.96 = 5,562.25 : x
2. Step 2: Convert to fraction form
   9,145.89/12,621.96 = 5,562.25/x
3. Step 3: Cross multiply
   9,145.89x = 12,621.96 × 5,562.25
4. Step 4: Simplify right side
   9,145.89x = 70,206,465.46
5. Step 5: Solve for x
   x = 70,206,465.46/9,145.89
6. Step 6: Final answer
   x = 7,676.29