Finding the Fourth Proportional to 25,019.56, 34,526.71 and 13,688.93

Step by Step Solution

1. Step 1: Write the proportion equation
   25,019.56 : 34,526.71 = 13,688.93 : x
2. Step 2: Convert to fraction form
   25,019.56/34,526.71 = 13,688.93/x
3. Step 3: Cross multiply
   25,019.56x = 34,526.71 × 13,688.93
4. Step 4: Simplify right side
   25,019.56x = 472,633,613.27
5. Step 5: Solve for x
   x = 472,633,613.27/25,019.56
6. Step 6: Final answer
   x = 18,890.56