Finding the Fourth Proportional to 12,560.22, 17,370.72 and 10,985.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,560.22 : 17,370.72 = 10,985.58 : x
2. Step 2: Convert to fraction form
   12,560.22/17,370.72 = 10,985.58/x
3. Step 3: Cross multiply
   12,560.22x = 17,370.72 × 10,985.58
4. Step 4: Simplify right side
   12,560.22x = 190,827,434.22
5. Step 5: Solve for x
   x = 190,827,434.22/12,560.22
6. Step 6: Final answer
   x = 15,193.00