Finding the Fourth Proportional to 12,963,910.72, 17,890,557.52 and 7,163,066.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,963,910.72 : 17,890,557.52 = 7,163,066.16 : x
2. Step 2: Convert to fraction form
   12,963,910.72/17,890,557.52 = 7,163,066.16/x
3. Step 3: Cross multiply
   12,963,910.72x = 17,890,557.52 × 7,163,066.16
4. Step 4: Simplify right side
   12,963,910.72x = 128,151,247,155,045.52
5. Step 5: Solve for x
   x = 128,151,247,155,045.52/12,963,910.72
6. Step 6: Final answer
   x = 9,885,230.62