Finding the Fourth Proportional to 8,385,422.31, 12,565,303.56 and 5,642,812.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,385,422.31 : 12,565,303.56 = 5,642,812.98 : x
2. Step 2: Convert to fraction form
   8,385,422.31/12,565,303.56 = 5,642,812.98/x
3. Step 3: Cross multiply
   8,385,422.31x = 12,565,303.56 × 5,642,812.98
4. Step 4: Simplify right side
   8,385,422.31x = 70,903,658,026,008.22
5. Step 5: Solve for x
   x = 70,903,658,026,008.22/8,385,422.31
6. Step 6: Final answer
   x = 8,455,585.83