Finding the Fourth Proportional to 3,158.66, 4,739.59 and 2,130.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,158.66 : 4,739.59 = 2,130.50 : x
2. Step 2: Convert to fraction form
   3,158.66/4,739.59 = 2,130.50/x
3. Step 3: Cross multiply
   3,158.66x = 4,739.59 × 2,130.50
4. Step 4: Simplify right side
   3,158.66x = 10,097,696.50
5. Step 5: Solve for x
   x = 10,097,696.50/3,158.66
6. Step 6: Final answer
   x = 3,196.83