Finding the Fourth Proportional to 12,580.78, 17,365.11 and 10,080.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,580.78 : 17,365.11 = 10,080.34 : x
2. Step 2: Convert to fraction form
   12,580.78/17,365.11 = 10,080.34/x
3. Step 3: Cross multiply
   12,580.78x = 17,365.11 × 10,080.34
4. Step 4: Simplify right side
   12,580.78x = 175,046,212.94
5. Step 5: Solve for x
   x = 175,046,212.94/12,580.78
6. Step 6: Final answer
   x = 13,913.78