Finding the Fourth Proportional to 20,394.41, 28,156.89 and 13,598.00

Step by Step Solution

1. Step 1: Write the proportion equation
   20,394.41 : 28,156.89 = 13,598.00 : x
2. Step 2: Convert to fraction form
   20,394.41/28,156.89 = 13,598.00/x
3. Step 3: Cross multiply
   20,394.41x = 28,156.89 × 13,598.00
4. Step 4: Simplify right side
   20,394.41x = 382,877,181.45
5. Step 5: Solve for x
   x = 382,877,181.45/20,394.41
6. Step 6: Final answer
   x = 18,773.63