Finding the Fourth Proportional to 17,810.72, 26,706.21 and 7,288.13

Step by Step Solution

1. Step 1: Write the proportion equation
   17,810.72 : 26,706.21 = 7,288.13 : x
2. Step 2: Convert to fraction form
   17,810.72/26,706.21 = 7,288.13/x
3. Step 3: Cross multiply
   17,810.72x = 26,706.21 × 7,288.13
4. Step 4: Simplify right side
   17,810.72x = 194,638,196.76
5. Step 5: Solve for x
   x = 194,638,196.76/17,810.72
6. Step 6: Final answer
   x = 10,928.15