Finding the Fourth Proportional to 21,935.30, 32,895.59 and 7,140.74

Step by Step Solution

1. Step 1: Write the proportion equation
   21,935.30 : 32,895.59 = 7,140.74 : x
2. Step 2: Convert to fraction form
   21,935.30/32,895.59 = 7,140.74/x
3. Step 3: Cross multiply
   21,935.30x = 32,895.59 × 7,140.74
4. Step 4: Simplify right side
   21,935.30x = 234,898,855.34
5. Step 5: Solve for x
   x = 234,898,855.34/21,935.30
6. Step 6: Final answer
   x = 10,708.71