Finding the Fourth Proportional to 25,019.58, 34,526.73 and 13,688.94

Step by Step Solution

1. Step 1: Write the proportion equation
   25,019.58 : 34,526.73 = 13,688.94 : x
2. Step 2: Convert to fraction form
   25,019.58/34,526.73 = 13,688.94/x
3. Step 3: Cross multiply
   25,019.58x = 34,526.73 × 13,688.94
4. Step 4: Simplify right side
   25,019.58x = 472,634,335.37
5. Step 5: Solve for x
   x = 472,634,335.37/25,019.58
6. Step 6: Final answer
   x = 18,890.58