Finding the Fourth Proportional to 10,308.86, 15,426.38 and 8,926.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,308.86 : 15,426.38 = 8,926.98 : x
2. Step 2: Convert to fraction form
   10,308.86/15,426.38 = 8,926.98/x
3. Step 3: Cross multiply
   10,308.86x = 15,426.38 × 8,926.98
4. Step 4: Simplify right side
   10,308.86x = 137,710,985.73
5. Step 5: Solve for x
   x = 137,710,985.73/10,308.86
6. Step 6: Final answer
   x = 13,358.51