Finding the Fourth Proportional to 9,188.56, 12,687.36 and 7,060.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,188.56 : 12,687.36 = 7,060.74 : x
2. Step 2: Convert to fraction form
   9,188.56/12,687.36 = 7,060.74/x
3. Step 3: Cross multiply
   9,188.56x = 12,687.36 × 7,060.74
4. Step 4: Simplify right side
   9,188.56x = 89,582,051.51
5. Step 5: Solve for x
   x = 89,582,051.51/9,188.56
6. Step 6: Final answer
   x = 9,749.30