Finding the Fourth Proportional to 5,150.79, 7,111.80 and 3,164.00

Step by Step Solution

1. Step 1: Write the proportion equation
   5,150.79 : 7,111.80 = 3,164.00 : x
2. Step 2: Convert to fraction form
   5,150.79/7,111.80 = 3,164.00/x
3. Step 3: Cross multiply
   5,150.79x = 7,111.80 × 3,164.00
4. Step 4: Simplify right side
   5,150.79x = 22,501,699.64
5. Step 5: Solve for x
   x = 22,501,699.64/5,150.79
6. Step 6: Final answer
   x = 4,368.59