Finding the Fourth Proportional to 12,959.50, 17,886.27 and 9,810.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,959.50 : 17,886.27 = 9,810.22 : x
2. Step 2: Convert to fraction form
   12,959.50/17,886.27 = 9,810.22/x
3. Step 3: Cross multiply
   12,959.50x = 17,886.27 × 9,810.22
4. Step 4: Simplify right side
   12,959.50x = 175,468,243.68
5. Step 5: Solve for x
   x = 175,468,243.68/12,959.50
6. Step 6: Final answer
   x = 13,539.74