Finding the Fourth Proportional to 14,089.89, 21,155.58 and 7,862.07

Step by Step Solution

1. Step 1: Write the proportion equation
   14,089.89 : 21,155.58 = 7,862.07 : x
2. Step 2: Convert to fraction form
   14,089.89/21,155.58 = 7,862.07/x
3. Step 3: Cross multiply
   14,089.89x = 21,155.58 × 7,862.07
4. Step 4: Simplify right side
   14,089.89x = 166,326,650.85
5. Step 5: Solve for x
   x = 166,326,650.85/14,089.89
6. Step 6: Final answer
   x = 11,804.68