Finding the Fourth Proportional to 34,978.82, 48,249.20 and 21,360.48

Step by Step Solution

1. Step 1: Write the proportion equation
   34,978.82 : 48,249.20 = 21,360.48 : x
2. Step 2: Convert to fraction form
   34,978.82/48,249.20 = 21,360.48/x
3. Step 3: Cross multiply
   34,978.82x = 48,249.20 × 21,360.48
4. Step 4: Simplify right side
   34,978.82x = 1,030,626,071.62
5. Step 5: Solve for x
   x = 1,030,626,071.62/34,978.82
6. Step 6: Final answer
   x = 29,464.29