Finding the Fourth Proportional to 38,443.30, 53,051.84 and 21,447.12

Step by Step Solution

1. Step 1: Write the proportion equation
   38,443.30 : 53,051.84 = 21,447.12 : x
2. Step 2: Convert to fraction form
   38,443.30/53,051.84 = 21,447.12/x
3. Step 3: Cross multiply
   38,443.30x = 53,051.84 × 21,447.12
4. Step 4: Simplify right side
   38,443.30x = 1,137,809,071.47
5. Step 5: Solve for x
   x = 1,137,809,071.47/38,443.30
6. Step 6: Final answer
   x = 29,597.07