Finding the Fourth Proportional to 12,961.08, 17,885.27 and 7,654.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,961.08 : 17,885.27 = 7,654.91 : x
2. Step 2: Convert to fraction form
   12,961.08/17,885.27 = 7,654.91/x
3. Step 3: Cross multiply
   12,961.08x = 17,885.27 × 7,654.91
4. Step 4: Simplify right side
   12,961.08x = 136,910,061.89
5. Step 5: Solve for x
   x = 136,910,061.89/12,961.08
6. Step 6: Final answer
   x = 10,563.17