Finding the Fourth Proportional to 9,388.74, 12,953.61 and 5,407.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,388.74 : 12,953.61 = 5,407.50 : x
2. Step 2: Convert to fraction form
   9,388.74/12,953.61 = 5,407.50/x
3. Step 3: Cross multiply
   9,388.74x = 12,953.61 × 5,407.50
4. Step 4: Simplify right side
   9,388.74x = 70,046,646.08
5. Step 5: Solve for x
   x = 70,046,646.08/9,388.74
6. Step 6: Final answer
   x = 7,460.71