Finding the Fourth Proportional to 38,617.66, 53,287.86 and 21,622.84

Step by Step Solution

1. Step 1: Write the proportion equation
   38,617.66 : 53,287.86 = 21,622.84 : x
2. Step 2: Convert to fraction form
   38,617.66/53,287.86 = 21,622.84/x
3. Step 3: Cross multiply
   38,617.66x = 53,287.86 × 21,622.84
4. Step 4: Simplify right side
   38,617.66x = 1,152,234,870.72
5. Step 5: Solve for x
   x = 1,152,234,870.72/38,617.66
6. Step 6: Final answer
   x = 29,836.99