Finding the Fourth Proportional to 25,143.31, 37,657.55 and 12,004.91

Step by Step Solution

1. Step 1: Write the proportion equation
   25,143.31 : 37,657.55 = 12,004.91 : x
2. Step 2: Convert to fraction form
   25,143.31/37,657.55 = 12,004.91/x
3. Step 3: Cross multiply
   25,143.31x = 37,657.55 × 12,004.91
4. Step 4: Simplify right side
   25,143.31x = 452,075,340.30
5. Step 5: Solve for x
   x = 452,075,340.30/25,143.31
6. Step 6: Final answer
   x = 17,979.95