Finding the Fourth Proportional to 52,420.95, 72,341.78 and 28,548.09

Step by Step Solution

1. Step 1: Write the proportion equation
   52,420.95 : 72,341.78 = 28,548.09 : x
2. Step 2: Convert to fraction form
   52,420.95/72,341.78 = 28,548.09/x
3. Step 3: Cross multiply
   52,420.95x = 72,341.78 × 28,548.09
4. Step 4: Simplify right side
   52,420.95x = 2,065,219,503.46
5. Step 5: Solve for x
   x = 2,065,219,503.46/52,420.95
6. Step 6: Final answer
   x = 39,396.83