Finding the Fourth Proportional to 21,870.59, 32,806.49 and 8,543.07

Step by Step Solution

1. Step 1: Write the proportion equation
   21,870.59 : 32,806.49 = 8,543.07 : x
2. Step 2: Convert to fraction form
   21,870.59/32,806.49 = 8,543.07/x
3. Step 3: Cross multiply
   21,870.59x = 32,806.49 × 8,543.07
4. Step 4: Simplify right side
   21,870.59x = 280,268,097.81
5. Step 5: Solve for x
   x = 280,268,097.81/21,870.59
6. Step 6: Final answer
   x = 12,814.84