Finding the Fourth Proportional to 20,543.00, 30,817.89 and 7,212.53

Step by Step Solution

1. Step 1: Write the proportion equation
   20,543.00 : 30,817.89 = 7,212.53 : x
2. Step 2: Convert to fraction form
   20,543.00/30,817.89 = 7,212.53/x
3. Step 3: Cross multiply
   20,543.00x = 30,817.89 × 7,212.53
4. Step 4: Simplify right side
   20,543.00x = 222,274,802.07
5. Step 5: Solve for x
   x = 222,274,802.07/20,543.00
6. Step 6: Final answer
   x = 10,819.98