Finding the Fourth Proportional to 38,142.67, 52,638.54 and 21,145.83

Step by Step Solution

1. Step 1: Write the proportion equation
   38,142.67 : 52,638.54 = 21,145.83 : x
2. Step 2: Convert to fraction form
   38,142.67/52,638.54 = 21,145.83/x
3. Step 3: Cross multiply
   38,142.67x = 52,638.54 × 21,145.83
4. Step 4: Simplify right side
   38,142.67x = 1,113,085,618.29
5. Step 5: Solve for x
   x = 1,113,085,618.29/38,142.67
6. Step 6: Final answer
   x = 29,182.17