Finding the Fourth Proportional to 38,885.94, 53,667.82 and 21,893.56

Step by Step Solution

1. Step 1: Write the proportion equation
   38,885.94 : 53,667.82 = 21,893.56 : x
2. Step 2: Convert to fraction form
   38,885.94/53,667.82 = 21,893.56/x
3. Step 3: Cross multiply
   38,885.94x = 53,667.82 × 21,893.56
4. Step 4: Simplify right side
   38,885.94x = 1,174,979,407.29
5. Step 5: Solve for x
   x = 1,174,979,407.29/38,885.94
6. Step 6: Final answer
   x = 30,216.05