Finding the Fourth Proportional to 7,189.18, 9,921.06 and 4,045.37

Step by Step Solution

1. Step 1: Write the proportion equation
   7,189.18 : 9,921.06 = 4,045.37 : x
2. Step 2: Convert to fraction form
   7,189.18/9,921.06 = 4,045.37/x
3. Step 3: Cross multiply
   7,189.18x = 9,921.06 × 4,045.37
4. Step 4: Simplify right side
   7,189.18x = 40,134,308.89
5. Step 5: Solve for x
   x = 40,134,308.89/7,189.18
6. Step 6: Final answer
   x = 5,582.60