Finding the Fourth Proportional to 5,642.33, 8,447.90 and 3,670.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,642.33 : 8,447.90 = 3,670.25 : x
2. Step 2: Convert to fraction form
   5,642.33/8,447.90 = 3,670.25/x
3. Step 3: Cross multiply
   5,642.33x = 8,447.90 × 3,670.25
4. Step 4: Simplify right side
   5,642.33x = 31,005,844.38
5. Step 5: Solve for x
   x = 31,005,844.38/5,642.33
6. Step 6: Final answer
   x = 5,495.22