Finding the Fourth Proportional to 10,387.84, 14,314.62 and 7,398.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,387.84 : 14,314.62 = 7,398.40 : x
2. Step 2: Convert to fraction form
   10,387.84/14,314.62 = 7,398.40/x
3. Step 3: Cross multiply
   10,387.84x = 14,314.62 × 7,398.40
4. Step 4: Simplify right side
   10,387.84x = 105,905,284.61
5. Step 5: Solve for x
   x = 105,905,284.61/10,387.84
6. Step 6: Final answer
   x = 10,195.12