Finding the Fourth Proportional to 38,451, 53,062.38 and 21,685.08

Step by Step Solution

1. Step 1: Write the proportion equation
   38,451 : 53,062.38 = 21,685.08 : x
2. Step 2: Convert to fraction form
   38,451/53,062.38 = 21,685.08/x
3. Step 3: Cross multiply
   38,451x = 53,062.38 × 21,685.08
4. Step 4: Simplify right side
   38,451x = 1,150,661,955.29
5. Step 5: Solve for x
   x = 1,150,661,955.29/38,451
6. Step 6: Final answer
   x = 29,925.41