Finding the Fourth Proportional to 13,112.55, 18,095.40 and 7,807.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,112.55 : 18,095.40 = 7,807.59 : x
2. Step 2: Convert to fraction form
   13,112.55/18,095.40 = 7,807.59/x
3. Step 3: Cross multiply
   13,112.55x = 18,095.40 × 7,807.59
4. Step 4: Simplify right side
   13,112.55x = 141,281,464.09
5. Step 5: Solve for x
   x = 141,281,464.09/13,112.55
6. Step 6: Final answer
   x = 10,774.52