Finding the Fourth Proportional to 5,005.31, 7,507.89 and 1,673.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,005.31 : 7,507.89 = 1,673.78 : x
2. Step 2: Convert to fraction form
   5,005.31/7,507.89 = 1,673.78/x
3. Step 3: Cross multiply
   5,005.31x = 7,507.89 × 1,673.78
4. Step 4: Simplify right side
   5,005.31x = 12,566,518.58
5. Step 5: Solve for x
   x = 12,566,518.58/5,005.31
6. Step 6: Final answer
   x = 2,510.64