Finding the Fourth Proportional to 21,925.86, 30,259.54 and 13,427.94

Step by Step Solution

1. Step 1: Write the proportion equation
   21,925.86 : 30,259.54 = 13,427.94 : x
2. Step 2: Convert to fraction form
   21,925.86/30,259.54 = 13,427.94/x
3. Step 3: Cross multiply
   21,925.86x = 30,259.54 × 13,427.94
4. Step 4: Simplify right side
   21,925.86x = 406,323,287.55
5. Step 5: Solve for x
   x = 406,323,287.55/21,925.86
6. Step 6: Final answer
   x = 18,531.69