Finding the Fourth Proportional to 38,499.39, 53,127.48 and 21,505.59

Step by Step Solution

1. Step 1: Write the proportion equation
   38,499.39 : 53,127.48 = 21,505.59 : x
2. Step 2: Convert to fraction form
   38,499.39/53,127.48 = 21,505.59/x
3. Step 3: Cross multiply
   38,499.39x = 53,127.48 × 21,505.59
4. Step 4: Simplify right side
   38,499.39x = 1,142,537,802.61
5. Step 5: Solve for x
   x = 1,142,537,802.61/38,499.39
6. Step 6: Final answer
   x = 29,676.78