Finding the Fourth Proportional to 13,978.00, 20,976.72 and 9,035.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,978.00 : 20,976.72 = 9,035.38 : x
2. Step 2: Convert to fraction form
   13,978.00/20,976.72 = 9,035.38/x
3. Step 3: Cross multiply
   13,978.00x = 20,976.72 × 9,035.38
4. Step 4: Simplify right side
   13,978.00x = 189,532,486.29
5. Step 5: Solve for x
   x = 189,532,486.29/13,978.00
6. Step 6: Final answer
   x = 13,559.35