Finding the Fourth Proportional to 17,746.72, 26,618.88 and 7,886.56

Step by Step Solution

1. Step 1: Write the proportion equation
   17,746.72 : 26,618.88 = 7,886.56 : x
2. Step 2: Convert to fraction form
   17,746.72/26,618.88 = 7,886.56/x
3. Step 3: Cross multiply
   17,746.72x = 26,618.88 × 7,886.56
4. Step 4: Simplify right side
   17,746.72x = 209,931,394.25
5. Step 5: Solve for x
   x = 209,931,394.25/17,746.72
6. Step 6: Final answer
   x = 11,829.31