Finding the Fourth Proportional to 8,967.60, 12,376.38 and 5,430.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,967.60 : 12,376.38 = 5,430.72 : x
2. Step 2: Convert to fraction form
   8,967.60/12,376.38 = 5,430.72/x
3. Step 3: Cross multiply
   8,967.60x = 12,376.38 × 5,430.72
4. Step 4: Simplify right side
   8,967.60x = 67,212,654.39
5. Step 5: Solve for x
   x = 67,212,654.39/8,967.60
6. Step 6: Final answer
   x = 7,495.05