Finding the Fourth Proportional to 9,903.10, 14,856.52 and 3,980.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,903.10 : 14,856.52 = 3,980.45 : x
2. Step 2: Convert to fraction form
   9,903.10/14,856.52 = 3,980.45/x
3. Step 3: Cross multiply
   9,903.10x = 14,856.52 × 3,980.45
4. Step 4: Simplify right side
   9,903.10x = 59,135,584.30
5. Step 5: Solve for x
   x = 59,135,584.30/9,903.10
6. Step 6: Final answer
   x = 5,971.42