Finding the Fourth Proportional to 25,272.68, 37,861.63 and 21,139.25

Step by Step Solution

1. Step 1: Write the proportion equation
   25,272.68 : 37,861.63 = 21,139.25 : x
2. Step 2: Convert to fraction form
   25,272.68/37,861.63 = 21,139.25/x
3. Step 3: Cross multiply
   25,272.68x = 37,861.63 × 21,139.25
4. Step 4: Simplify right side
   25,272.68x = 800,366,219.82
5. Step 5: Solve for x
   x = 800,366,219.82/25,272.68
6. Step 6: Final answer
   x = 31,669.23