Finding the Fourth Proportional to 14,878.10, 22,360.89 and 13,259.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,878.10 : 22,360.89 = 13,259.72 : x
2. Step 2: Convert to fraction form
   14,878.10/22,360.89 = 13,259.72/x
3. Step 3: Cross multiply
   14,878.10x = 22,360.89 × 13,259.72
4. Step 4: Simplify right side
   14,878.10x = 296,499,140.35
5. Step 5: Solve for x
   x = 296,499,140.35/14,878.10
6. Step 6: Final answer
   x = 19,928.56