Finding the Fourth Proportional to 11,588.59, 15,991.05 and 7,112.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,588.59 : 15,991.05 = 7,112.53 : x
2. Step 2: Convert to fraction form
   11,588.59/15,991.05 = 7,112.53/x
3. Step 3: Cross multiply
   11,588.59x = 15,991.05 × 7,112.53
4. Step 4: Simplify right side
   11,588.59x = 113,736,822.86
5. Step 5: Solve for x
   x = 113,736,822.86/11,588.59
6. Step 6: Final answer
   x = 9,814.55