Finding the Fourth Proportional to 52,511.98, 72,465.74 and 28,638.14

Step by Step Solution

1. Step 1: Write the proportion equation
   52,511.98 : 72,465.74 = 28,638.14 : x
2. Step 2: Convert to fraction form
   52,511.98/72,465.74 = 28,638.14/x
3. Step 3: Cross multiply
   52,511.98x = 72,465.74 × 28,638.14
4. Step 4: Simplify right side
   52,511.98x = 2,075,284,016.82
5. Step 5: Solve for x
   x = 2,075,284,016.82/52,511.98
6. Step 6: Final answer
   x = 39,520.20