Finding the Fourth Proportional to 40,814.56, 61,216.04 and 13,108.96

Step by Step Solution

1. Step 1: Write the proportion equation
   40,814.56 : 61,216.04 = 13,108.96 : x
2. Step 2: Convert to fraction form
   40,814.56/61,216.04 = 13,108.96/x
3. Step 3: Cross multiply
   40,814.56x = 61,216.04 × 13,108.96
4. Step 4: Simplify right side
   40,814.56x = 802,478,619.72
5. Step 5: Solve for x
   x = 802,478,619.72/40,814.56
6. Step 6: Final answer
   x = 19,661.58