Finding the Fourth Proportional to 22,779.56, 31,435.83 and 13,348.13

Step by Step Solution

1. Step 1: Write the proportion equation
   22,779.56 : 31,435.83 = 13,348.13 : x
2. Step 2: Convert to fraction form
   22,779.56/31,435.83 = 13,348.13/x
3. Step 3: Cross multiply
   22,779.56x = 31,435.83 × 13,348.13
4. Step 4: Simplify right side
   22,779.56x = 419,609,388.32
5. Step 5: Solve for x
   x = 419,609,388.32/22,779.56
6. Step 6: Final answer
   x = 18,420.43