Finding the Fourth Proportional to 22,010.88, 30,374.72 and 12,579.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,010.88 : 30,374.72 = 12,579.20 : x
2. Step 2: Convert to fraction form
   22,010.88/30,374.72 = 12,579.20/x
3. Step 3: Cross multiply
   22,010.88x = 30,374.72 × 12,579.20
4. Step 4: Simplify right side
   22,010.88x = 382,089,677.82
5. Step 5: Solve for x
   x = 382,089,677.82/22,010.88
6. Step 6: Final answer
   x = 17,359.13