Finding the Fourth Proportional to 12,969.29, 19,435.53 and 9,996.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,969.29 : 19,435.53 = 9,996.50 : x
2. Step 2: Convert to fraction form
   12,969.29/19,435.53 = 9,996.50/x
3. Step 3: Cross multiply
   12,969.29x = 19,435.53 × 9,996.50
4. Step 4: Simplify right side
   12,969.29x = 194,287,275.65
5. Step 5: Solve for x
   x = 194,287,275.65/12,969.29
6. Step 6: Final answer
   x = 14,980.56