Finding the Fourth Proportional to 12,889.72, 17,784.58 and 7,583.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,889.72 : 17,784.58 = 7,583.51 : x
2. Step 2: Convert to fraction form
   12,889.72/17,784.58 = 7,583.51/x
3. Step 3: Cross multiply
   12,889.72x = 17,784.58 × 7,583.51
4. Step 4: Simplify right side
   12,889.72x = 134,869,540.28
5. Step 5: Solve for x
   x = 134,869,540.28/12,889.72
6. Step 6: Final answer
   x = 10,463.34