Finding the Fourth Proportional to 7,316.31, 10,977.80 and 3,100.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,316.31 : 10,977.80 = 3,100.72 : x
2. Step 2: Convert to fraction form
   7,316.31/10,977.80 = 3,100.72/x
3. Step 3: Cross multiply
   7,316.31x = 10,977.80 × 3,100.72
4. Step 4: Simplify right side
   7,316.31x = 34,039,105.49
5. Step 5: Solve for x
   x = 34,039,105.49/7,316.31
6. Step 6: Final answer
   x = 4,652.49