Finding the Fourth Proportional to 25,426.71, 35,090.69 and 14,099.90

Step by Step Solution

1. Step 1: Write the proportion equation
   25,426.71 : 35,090.69 = 14,099.90 : x
2. Step 2: Convert to fraction form
   25,426.71/35,090.69 = 14,099.90/x
3. Step 3: Cross multiply
   25,426.71x = 35,090.69 × 14,099.90
4. Step 4: Simplify right side
   25,426.71x = 494,774,973.98
5. Step 5: Solve for x
   x = 494,774,973.98/25,426.71
6. Step 6: Final answer
   x = 19,458.87