Finding the Fourth Proportional to 14,354.37, 21,540.06 and 7,780.41

Step by Step Solution

1. Step 1: Write the proportion equation
   14,354.37 : 21,540.06 = 7,780.41 : x
2. Step 2: Convert to fraction form
   14,354.37/21,540.06 = 7,780.41/x
3. Step 3: Cross multiply
   14,354.37x = 21,540.06 × 7,780.41
4. Step 4: Simplify right side
   14,354.37x = 167,590,498.22
5. Step 5: Solve for x
   x = 167,590,498.22/14,354.37
6. Step 6: Final answer
   x = 11,675.22