Finding the Fourth Proportional to 10,063.84, 13,901.40 and 8,390.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,063.84 : 13,901.40 = 8,390.72 : x
2. Step 2: Convert to fraction form
   10,063.84/13,901.40 = 8,390.72/x
3. Step 3: Cross multiply
   10,063.84x = 13,901.40 × 8,390.72
4. Step 4: Simplify right side
   10,063.84x = 116,642,755.01
5. Step 5: Solve for x
   x = 116,642,755.01/10,063.84
6. Step 6: Final answer
   x = 11,590.28