Finding the Fourth Proportional to 10,748.32, 16,117.30 and 8,402.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,748.32 : 16,117.30 = 8,402.38 : x
2. Step 2: Convert to fraction form
   10,748.32/16,117.30 = 8,402.38/x
3. Step 3: Cross multiply
   10,748.32x = 16,117.30 × 8,402.38
4. Step 4: Simplify right side
   10,748.32x = 135,423,679.17
5. Step 5: Solve for x
   x = 135,423,679.17/10,748.32
6. Step 6: Final answer
   x = 12,599.52