Finding the Fourth Proportional to 11,400.87, 17,099.91 and 3,080.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,400.87 : 17,099.91 = 3,080.25 : x
2. Step 2: Convert to fraction form
   11,400.87/17,099.91 = 3,080.25/x
3. Step 3: Cross multiply
   11,400.87x = 17,099.91 × 3,080.25
4. Step 4: Simplify right side
   11,400.87x = 52,671,997.78
5. Step 5: Solve for x
   x = 52,671,997.78/11,400.87
6. Step 6: Final answer
   x = 4,620.00