Finding the Fourth Proportional to 12,887.63, 17,784.62 and 7,582.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,887.63 : 17,784.62 = 7,582.79 : x
2. Step 2: Convert to fraction form
   12,887.63/17,784.62 = 7,582.79/x
3. Step 3: Cross multiply
   12,887.63x = 17,784.62 × 7,582.79
4. Step 4: Simplify right side
   12,887.63x = 134,856,968.72
5. Step 5: Solve for x
   x = 134,856,968.72/12,887.63
6. Step 6: Final answer
   x = 10,464.07