Finding the Fourth Proportional to 20,393.48, 30,601.37 and 7,913.99

Step by Step Solution

1. Step 1: Write the proportion equation
   20,393.48 : 30,601.37 = 7,913.99 : x
2. Step 2: Convert to fraction form
   20,393.48/30,601.37 = 7,913.99/x
3. Step 3: Cross multiply
   20,393.48x = 30,601.37 × 7,913.99
4. Step 4: Simplify right side
   20,393.48x = 242,178,973.10
5. Step 5: Solve for x
   x = 242,178,973.10/20,393.48
6. Step 6: Final answer
   x = 11,875.31