Finding the Fourth Proportional to 12,965,468.15, 17,892,340.15 and 7,164,199.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,965,468.15 : 17,892,340.15 = 7,164,199.15 : x
2. Step 2: Convert to fraction form
   12,965,468.15/17,892,340.15 = 7,164,199.15/x
3. Step 3: Cross multiply
   12,965,468.15x = 17,892,340.15 × 7,164,199.15
4. Step 4: Simplify right side
   12,965,468.15x = 128,184,287,968,858.17
5. Step 5: Solve for x
   x = 128,184,287,968,858.17/12,965,468.15
6. Step 6: Final answer
   x = 9,886,591.56