Finding the Fourth Proportional to 62,796.21, 86,646.89 and 38,928.75

Step by Step Solution

1. Step 1: Write the proportion equation
   62,796.21 : 86,646.89 = 38,928.75 : x
2. Step 2: Convert to fraction form
   62,796.21/86,646.89 = 38,928.75/x
3. Step 3: Cross multiply
   62,796.21x = 86,646.89 × 38,928.75
4. Step 4: Simplify right side
   62,796.21x = 3,373,054,924.44
5. Step 5: Solve for x
   x = 3,373,054,924.44/62,796.21
6. Step 6: Final answer
   x = 53,714.31