Finding the Fourth Proportional to 11,156.17, 15,396.72 and 7,126.70

Step by Step Solution

1. Step 1: Write the proportion equation
   11,156.17 : 15,396.72 = 7,126.70 : x
2. Step 2: Convert to fraction form
   11,156.17/15,396.72 = 7,126.70/x
3. Step 3: Cross multiply
   11,156.17x = 15,396.72 × 7,126.70
4. Step 4: Simplify right side
   11,156.17x = 109,727,804.42
5. Step 5: Solve for x
   x = 109,727,804.42/11,156.17
6. Step 6: Final answer
   x = 9,835.62