Finding the Fourth Proportional to 28,124.31, 42,185.38 and 7,064.52

Step by Step Solution

1. Step 1: Write the proportion equation
   28,124.31 : 42,185.38 = 7,064.52 : x
2. Step 2: Convert to fraction form
   28,124.31/42,185.38 = 7,064.52/x
3. Step 3: Cross multiply
   28,124.31x = 42,185.38 × 7,064.52
4. Step 4: Simplify right side
   28,124.31x = 298,019,460.72
5. Step 5: Solve for x
   x = 298,019,460.72/28,124.31
6. Step 6: Final answer
   x = 10,596.51