Finding the Fourth Proportional to 11,864.63, 16,372.67 and 7,085.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,864.63 : 16,372.67 = 7,085.34 : x
2. Step 2: Convert to fraction form
   11,864.63/16,372.67 = 7,085.34/x
3. Step 3: Cross multiply
   11,864.63x = 16,372.67 × 7,085.34
4. Step 4: Simplify right side
   11,864.63x = 116,005,898.23
5. Step 5: Solve for x
   x = 116,005,898.23/11,864.63
6. Step 6: Final answer
   x = 9,777.45