Finding the Fourth Proportional to 38,453, 53,068.38 and 21,689.24

Step by Step Solution

1. Step 1: Write the proportion equation
   38,453 : 53,068.38 = 21,689.24 : x
2. Step 2: Convert to fraction form
   38,453/53,068.38 = 21,689.24/x
3. Step 3: Cross multiply
   38,453x = 53,068.38 × 21,689.24
4. Step 4: Simplify right side
   38,453x = 1,151,012,830.23
5. Step 5: Solve for x
   x = 1,151,012,830.23/38,453
6. Step 6: Final answer
   x = 29,932.98