Finding the Fourth Proportional to 10,046.13, 13,860.86 and 7,915.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,046.13 : 13,860.86 = 7,915.05 : x
2. Step 2: Convert to fraction form
   10,046.13/13,860.86 = 7,915.05/x
3. Step 3: Cross multiply
   10,046.13x = 13,860.86 × 7,915.05
4. Step 4: Simplify right side
   10,046.13x = 109,709,360.37
5. Step 5: Solve for x
   x = 109,709,360.37/10,046.13
6. Step 6: Final answer
   x = 10,920.55