Finding the Fourth Proportional to 9,373.86, 12,936.32 and 5,394.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,373.86 : 12,936.32 = 5,394.99 : x
2. Step 2: Convert to fraction form
   9,373.86/12,936.32 = 5,394.99/x
3. Step 3: Cross multiply
   9,373.86x = 12,936.32 × 5,394.99
4. Step 4: Simplify right side
   9,373.86x = 69,791,317.04
5. Step 5: Solve for x
   x = 69,791,317.04/9,373.86
6. Step 6: Final answer
   x = 7,445.31