Finding the Fourth Proportional to 19,499.79, 26,909.73 and 10,547.31

Step by Step Solution

1. Step 1: Write the proportion equation
   19,499.79 : 26,909.73 = 10,547.31 : x
2. Step 2: Convert to fraction form
   19,499.79/26,909.73 = 10,547.31/x
3. Step 3: Cross multiply
   19,499.79x = 26,909.73 × 10,547.31
4. Step 4: Simplify right side
   19,499.79x = 283,825,264.33
5. Step 5: Solve for x
   x = 283,825,264.33/19,499.79
6. Step 6: Final answer
   x = 14,555.30