Finding the Fourth Proportional to 12,985,925.62, 17,921,104.86 and 7,184,612.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,985,925.62 : 17,921,104.86 = 7,184,612.88 : x
2. Step 2: Convert to fraction form
   12,985,925.62/17,921,104.86 = 7,184,612.88/x
3. Step 3: Cross multiply
   12,985,925.62x = 17,921,104.86 × 7,184,612.88
4. Step 4: Simplify right side
   12,985,925.62x = 128,756,200,800,986.59
5. Step 5: Solve for x
   x = 128,756,200,800,986.59/12,985,925.62
6. Step 6: Final answer
   x = 9,915,057.62