Finding the Fourth Proportional to 52,288.65, 72,158.43 and 28,415.34

Step by Step Solution

1. Step 1: Write the proportion equation
   52,288.65 : 72,158.43 = 28,415.34 : x
2. Step 2: Convert to fraction form
   52,288.65/72,158.43 = 28,415.34/x
3. Step 3: Cross multiply
   52,288.65x = 72,158.43 × 28,415.34
4. Step 4: Simplify right side
   52,288.65x = 2,050,406,322.32
5. Step 5: Solve for x
   x = 2,050,406,322.32/52,288.65
6. Step 6: Final answer
   x = 39,213.22