Finding the Fourth Proportional to 7,312.56, 10,969.32 and 2,118

Step by Step Solution

1. Step 1: Write the proportion equation
   7,312.56 : 10,969.32 = 2,118 : x
2. Step 2: Convert to fraction form
   7,312.56/10,969.32 = 2,118/x
3. Step 3: Cross multiply
   7,312.56x = 10,969.32 × 2,118
4. Step 4: Simplify right side
   7,312.56x = 23,233,019.76
5. Step 5: Solve for x
   x = 23,233,019.76/7,312.56
6. Step 6: Final answer
   x = 3,177.14