Finding the Fourth Proportional to 12,904.86, 17,807.58 and 7,162.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,904.86 : 17,807.58 = 7,162.50 : x
2. Step 2: Convert to fraction form
   12,904.86/17,807.58 = 7,162.50/x
3. Step 3: Cross multiply
   12,904.86x = 17,807.58 × 7,162.50
4. Step 4: Simplify right side
   12,904.86x = 127,546,791.75
5. Step 5: Solve for x
   x = 127,546,791.75/12,904.86
6. Step 6: Final answer
   x = 9,883.62