Finding the Fourth Proportional to 38,667.86, 53,366.07 and 21,676.69

Step by Step Solution

1. Step 1: Write the proportion equation
   38,667.86 : 53,366.07 = 21,676.69 : x
2. Step 2: Convert to fraction form
   38,667.86/53,366.07 = 21,676.69/x
3. Step 3: Cross multiply
   38,667.86x = 53,366.07 × 21,676.69
4. Step 4: Simplify right side
   38,667.86x = 1,156,799,755.91
5. Step 5: Solve for x
   x = 1,156,799,755.91/38,667.86
6. Step 6: Final answer
   x = 29,916.31