Finding the Fourth Proportional to 12,880.06, 17,773.48 and 7,214.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,880.06 : 17,773.48 = 7,214.37 : x
2. Step 2: Convert to fraction form
   12,880.06/17,773.48 = 7,214.37/x
3. Step 3: Cross multiply
   12,880.06x = 17,773.48 × 7,214.37
4. Step 4: Simplify right side
   12,880.06x = 128,224,362.69
5. Step 5: Solve for x
   x = 128,224,362.69/12,880.06
6. Step 6: Final answer
   x = 9,955.26