Finding the Fourth Proportional to 34,978.16, 48,265.80 and 21,359.36

Step by Step Solution

1. Step 1: Write the proportion equation
   34,978.16 : 48,265.80 = 21,359.36 : x
2. Step 2: Convert to fraction form
   34,978.16/48,265.80 = 21,359.36/x
3. Step 3: Cross multiply
   34,978.16x = 48,265.80 × 21,359.36
4. Step 4: Simplify right side
   34,978.16x = 1,030,926,597.89
5. Step 5: Solve for x
   x = 1,030,926,597.89/34,978.16
6. Step 6: Final answer
   x = 29,473.44