Finding the Fourth Proportional to 52,619.69, 72,616.98 and 28,748.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,619.69 : 72,616.98 = 28,748.18 : x
2. Step 2: Convert to fraction form
   52,619.69/72,616.98 = 28,748.18/x
3. Step 3: Cross multiply
   52,619.69x = 72,616.98 × 28,748.18
4. Step 4: Simplify right side
   52,619.69x = 2,087,606,012.10
5. Step 5: Solve for x
   x = 2,087,606,012.10/52,619.69
6. Step 6: Final answer
   x = 39,673.48