Finding the Fourth Proportional to 5,901.40, 8,139.72 and 3,803.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,901.40 : 8,139.72 = 3,803.50 : x
2. Step 2: Convert to fraction form
   5,901.40/8,139.72 = 3,803.50/x
3. Step 3: Cross multiply
   5,901.40x = 8,139.72 × 3,803.50
4. Step 4: Simplify right side
   5,901.40x = 30,959,425.02
5. Step 5: Solve for x
   x = 30,959,425.02/5,901.40
6. Step 6: Final answer
   x = 5,246.12