Finding the Fourth Proportional to 10,507.15, 14,498.88 and 5,791.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,507.15 : 14,498.88 = 5,791.40 : x
2. Step 2: Convert to fraction form
   10,507.15/14,498.88 = 5,791.40/x
3. Step 3: Cross multiply
   10,507.15x = 14,498.88 × 5,791.40
4. Step 4: Simplify right side
   10,507.15x = 83,968,741.14
5. Step 5: Solve for x
   x = 83,968,741.14/10,507.15
6. Step 6: Final answer
   x = 7,991.58