Finding the Fourth Proportional to 10,000,388.61, 13,800,536.72 and 5,416,709.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,000,388.61 : 13,800,536.72 = 5,416,709.98 : x
2. Step 2: Convert to fraction form
   10,000,388.61/13,800,536.72 = 5,416,709.98/x
3. Step 3: Cross multiply
   10,000,388.61x = 13,800,536.72 × 5,416,709.98
4. Step 4: Simplify right side
   10,000,388.61x = 74,753,504,980,580.47
5. Step 5: Solve for x
   x = 74,753,504,980,580.47/10,000,388.61
6. Step 6: Final answer
   x = 7,475,060.01