Finding the Fourth Proportional to 14,354.09, 19,799.71 and 9,870.07

Step by Step Solution

1. Step 1: Write the proportion equation
   14,354.09 : 19,799.71 = 9,870.07 : x
2. Step 2: Convert to fraction form
   14,354.09/19,799.71 = 9,870.07/x
3. Step 3: Cross multiply
   14,354.09x = 19,799.71 × 9,870.07
4. Step 4: Simplify right side
   14,354.09x = 195,424,375.33
5. Step 5: Solve for x
   x = 195,424,375.33/14,354.09
6. Step 6: Final answer
   x = 13,614.54