Finding the Fourth Proportional to 52,638.28, 72,640.74 and 28,764.96

Step by Step Solution

1. Step 1: Write the proportion equation
   52,638.28 : 72,640.74 = 28,764.96 : x
2. Step 2: Convert to fraction form
   52,638.28/72,640.74 = 28,764.96/x
3. Step 3: Cross multiply
   52,638.28x = 72,640.74 × 28,764.96
4. Step 4: Simplify right side
   52,638.28x = 2,089,507,980.47
5. Step 5: Solve for x
   x = 2,089,507,980.47/52,638.28
6. Step 6: Final answer
   x = 39,695.60