Finding the Fourth Proportional to 10,903.12, 16,354.34 and 3,111.93

Step by Step Solution

1. Step 1: Write the proportion equation
   10,903.12 : 16,354.34 = 3,111.93 : x
2. Step 2: Convert to fraction form
   10,903.12/16,354.34 = 3,111.93/x
3. Step 3: Cross multiply
   10,903.12x = 16,354.34 × 3,111.93
4. Step 4: Simplify right side
   10,903.12x = 50,893,561.28
5. Step 5: Solve for x
   x = 50,893,561.28/10,903.12
6. Step 6: Final answer
   x = 4,667.80