Finding the Fourth Proportional to 20,089.86, 30,131.35 and 5,298.93

Step by Step Solution

1. Step 1: Write the proportion equation
   20,089.86 : 30,131.35 = 5,298.93 : x
2. Step 2: Convert to fraction form
   20,089.86/30,131.35 = 5,298.93/x
3. Step 3: Cross multiply
   20,089.86x = 30,131.35 × 5,298.93
4. Step 4: Simplify right side
   20,089.86x = 159,663,914.46
5. Step 5: Solve for x
   x = 159,663,914.46/20,089.86
6. Step 6: Final answer
   x = 7,947.49