Finding the Fourth Proportional to 25,210.12, 34,796.38 and 15,139

Step by Step Solution

1. Step 1: Write the proportion equation
   25,210.12 : 34,796.38 = 15,139 : x
2. Step 2: Convert to fraction form
   25,210.12/34,796.38 = 15,139/x
3. Step 3: Cross multiply
   25,210.12x = 34,796.38 × 15,139
4. Step 4: Simplify right side
   25,210.12x = 526,782,396.82
5. Step 5: Solve for x
   x = 526,782,396.82/25,210.12
6. Step 6: Final answer
   x = 20,895.67