Finding the Fourth Proportional to 3,948.72, 5,917.43 and 2,900.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,948.72 : 5,917.43 = 2,900.50 : x
2. Step 2: Convert to fraction form
   3,948.72/5,917.43 = 2,900.50/x
3. Step 3: Cross multiply
   3,948.72x = 5,917.43 × 2,900.50
4. Step 4: Simplify right side
   3,948.72x = 17,163,505.72
5. Step 5: Solve for x
   x = 17,163,505.72/3,948.72
6. Step 6: Final answer
   x = 4,346.60