Finding the Fourth Proportional to 52,513.71, 72,468.05 and 28,638.96

Step by Step Solution

1. Step 1: Write the proportion equation
   52,513.71 : 72,468.05 = 28,638.96 : x
2. Step 2: Convert to fraction form
   52,513.71/72,468.05 = 28,638.96/x
3. Step 3: Cross multiply
   52,513.71x = 72,468.05 × 28,638.96
4. Step 4: Simplify right side
   52,513.71x = 2,075,409,442.03
5. Step 5: Solve for x
   x = 2,075,409,442.03/52,513.71
6. Step 6: Final answer
   x = 39,521.29