Finding the Fourth Proportional to 12,892,335.62, 19,340,706.63 and 5,315,159.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,892,335.62 : 19,340,706.63 = 5,315,159.30 : x
2. Step 2: Convert to fraction form
   12,892,335.62/19,340,706.63 = 5,315,159.30/x
3. Step 3: Cross multiply
   12,892,335.62x = 19,340,706.63 × 5,315,159.30
4. Step 4: Simplify right side
   12,892,335.62x = 102,798,936,713,016.16
5. Step 5: Solve for x
   x = 102,798,936,713,016.16/12,892,335.62
6. Step 6: Final answer
   x = 7,973,647.27