Finding the Fourth Proportional to 20,435.83, 30,656.15 and 7,290.07

Step by Step Solution

1. Step 1: Write the proportion equation
   20,435.83 : 30,656.15 = 7,290.07 : x
2. Step 2: Convert to fraction form
   20,435.83/30,656.15 = 7,290.07/x
3. Step 3: Cross multiply
   20,435.83x = 30,656.15 × 7,290.07
4. Step 4: Simplify right side
   20,435.83x = 223,485,442.98
5. Step 5: Solve for x
   x = 223,485,442.98/20,435.83
6. Step 6: Final answer
   x = 10,935.96